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  • Cosmic “Loophole” Could Let Black Holes Split In Two Like Dividing Cells

    Cosmic “Loophole” Could Let Black Holes Split In Two Like Dividing Cells

    Black holes can potentially divide and multiply like cells.

    This scenario is unlikely but theoretically possible, new research suggests, if a black hole spins up fast enough — the maximum rate physically possible, in fact. Then the black hole “can wear pants,” funneling itself down two separate tubes of spacetime to come out as separate bodies, they report in a new study published in the journal Physical Review D.

    “In our study, we investigate which physical laws normally prevent a black hole from splitting into two,” coauthor Francesco Sannino, of the University of Naples Federico II in Italy, said in a statement about the work. “We also investigate if certain circumstances may allow a split to happen.”

    You’ve probably heard of black hole mergers, but a black hole split is pretty esoteric territory. Central to the work is entropy, a concept in thermodynamics that describes the degree of disorder in a system. The universe naturally tends toward disorder; it’s why things decay. Or why your house gets messier over time — unless, crucially, you introduce extra energy into the system by tidying it up .

    If a black hole were to divide when it’s not rotating, it would require a decrease in entropy, or in other words, a decrease in the disorder in the system, which makes the scenario “thermodynamically unfavorable.”

    That’s what pushed the researchers to explore what happens when a black hole rotates at a high speed. Intriguingly, they found a “loophole” that causes the black hole’s outer boundary, the infamous event horizon, to form a pants-like shape with two “legs” across space and time, with one resulting black hole coming out at each end.

    But adding an additional constraint to this scenario, the original black hole needs to be spinning at the maximum possible speed. Any slower, and its progeny wouldn’t separate enough to prevent them from merging into one again.

    “The two resulting black holes must also be able to separate rather than immediately fall back together,” Sannino said in the statement. “When we include this requirement, the window largely closes again, except possibly for black holes rotating close to their maximum possible rate.”

    Though the work demonstrates it’s possible, “we cannot yet give a single probability for a black hole to split,” Sannino said. “It depends on how gravity behaves beyond Einstein’s theory, and we are working to quantify this.”

    It may be possible, though, to detect a split through gamma-ray telescopes. But in case you were imagining giant cosmic monsters spawning more underlings, the researchers’ work suggests this split is more likely to happen with small black holes.

    More on space: US Space Force Declares Far Side of the Moon a “Warfighting Domain,” Weighs Launch of Five Military Lunar Satellites

    The post Cosmic “Loophole” Could Let Black Holes Split In Two Like Dividing Cells appeared first on Futurism.

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  • 9 Free AI Demo Tools Worth Trying in 2026

    9 Free AI Demo Tools Worth Trying in 2026

    It’s 11:47 p.m. A buyer in another time zone is on your pricing page. They’re curious. Still, they don’t want to fill out a form, wait two days, and sit through a 45-minute call just to see one feature.

    So they leave.

    Most SaaS teams have lost a deal this way and never found out. The buyer wasn’t uninterested. They just wanted to see the product right then, and nobody was awake to show them.

    AI demo platforms fix this. They turn a quick click-through of your product into an interactive tour, a narrated video, or even an AI agent that answers questions on the spot. Many of them also come with free plans that never expire.

    This guide covers 9 of them. For each one, you’ll see what the free plan includes, where the AI helps, and when you’ll need to pay.

    How We Chose These Tools

    First, every tool here has a free plan, not just a time-limited trial. That rule removed popular options like Walnut, Consensus, and HowdyGo, which have no free tier. It also removed Trupeer, whose “free” option is a 10-day trial.

    Next, each platform had to use AI in an actual workflow: writing demo copy, generating voiceovers, translating content, or running conversational demo agents.

    Finally, we checked plan details against each vendor’s site in November 2026. Prices change often in this category, so confirm the numbers before you buy.

    SupademoSupademo

    In my testing, Supademo got me from recording to a finished demo with almost no friction, thanks to its simple UI and AI assistant. The resulting demo was a smooth slideshow navigation of the AI tool that anyone can easily follow. I also liked that Supademo gave me the option to blur out sensitive information.

    The only limitation I experienced was that a step was repeated twice because I re-clicked the feature to correct an entry error I had made. I also had to be careful not to click anything I don’t want Supademo to capture or misinterpret, as it did.

    Supademo 1Supademo 1

    If you judge by how much you can publish and test without paying, Supademo has the most generous free plan on this list. You get one creator, five interactive demos, 50 video recordings, and unlimited views. AI text personalization is included. On top of that, every workspace gets 1,500 free credits for the AI Demo Agent, which Supademo says covers about 75 demo calls.

    That agent is the highlight. It asks buyers about their needs, answers questions using content you approve, and shares the right demo in more than 50 languages. Paid plans add AI voiceovers, voice cloning, translation, and sandbox demos.

    Verdict: At $38 per creator per month (billed yearly), Scale is worth paying for once you hit the five-demo cap or want AI voiceovers. If a handful of demos covers your needs, stay on the free plan.

    Navattic Navattic

    While I could set a recording on Supademo, Navattic was more about taking screenshots as I clicked. The images were then used to create the demo. I didn’t find this to be the best approach because clicking to capture took away the interactivity.

    I couldn’t actually use the tool; I could only show the steps. So, I advise you to use Navattic for product demos that only require a basic slideshow. Anything more interactive can use a different tool.

    Testing NavatticTesting Navattic

    Navattic’s free Starter plan is small: one seat and one demo, either HTML or media. In my view, that’s fine for testing a single homepage demo, but too restrictive for anyone who needs demos for more than one use case. However, it includes Copilot, the AI that does the heavy lifting.

    You click through your product, and Copilot drafts the copy, tooltips, and demo story. Later, you can add Navattic Agents, AI voice agents that walk prospects through your product in real time.

    Best for: Teams that want polished HTML demos with very little writing.

    StorylaneStorylane

    Storylane’s pricing is listed at $40 per month, billed annually, but HTML demos only start on the Growth plan, at $500 per month for five seats. Storylane’s free plan gives you one seat and one published demo with unlimited views. That’s enough to put one good demo on your homepage.

    Meanwhile, the paid platform has a lot of AI. Storylane offers AI voiceovers, video avatars, and translation into 25+ languages. It also sells RepX, a conversational AI sales agent that qualifies website visitors over text, voice, or video.

    The catch: With only one published demo, you have to pick between a homepage demo and a sales-ready version. You can’t have both without upgrading.

    ArcadeArcade

    With Arcade, I only had to link the website and authorize access to create an AI-generated demo. The demo came with instructions for use and an AI voice narration. I could also prompt the AI to create the video, which I did. Both videos were accurate and easy to follow.

    Arcade 1
Arcade 1

    The free plan includes one seat, an allowance of AI credits, and an Arcade watermark.

    Its AI assistant, Avery, writes copy while you record and can narrate demo videos. Arcade’s own benchmark report, built on 14 million demo sessions, found that AI voiceovers raised completion rates by 14%. My test matched that: the AI-narrated demo explained each step clearly, and I didn’t have to write a script.

    Heads-up: Arcade changed its pricing in late October 2026 and now uses credit-based tiers. Check the current free allowance before you plan around it.

    LiveDemoLiveDemo

    LiveDemo stands out for one reason: you can host it yourself for free. The code is source-available under the FSL-1.1-MIT license, and self-hosting costs nothing on every plan.

    The hosted free plan includes one creator, three published demos, AI voiceover, and AI text personalization, with a watermark. Then, the Growth plan adds an AI Demo Agent with live video avatars that answer questions, qualify leads, and book meetings.

    The workflow for creating a demo with LiveDemo was similar to Arcade. I pasted the website link, and LiveDemo created the demo without me actively recording or adding Chrome extensions. I wouldn’t advise this, however, as the website restricted access. Therefore, the resulting video wasn’t credible. It only displayed one step, which went on in a loop.

    That’s why I took the other approach and recorded the video myself with LiveDemo’s Chrome extension. The recorded demo was far better as it displayed a video of me interacting with and navigating the site.

    LiveDemoLiveDemo

    Verdict: Pro costs $34/month ($27 billed annually). It’s worth it once three demos aren’t enough, or the watermark starts to matter. Growth costs $49/month ($39 billed annually) and only makes sense if you want the AI Demo Agent and live avatars.

    LayerpathLayerpath

    Layerpath solves a common headache: making the same content three times. I recorded once, and it produced an interactive tour, a step-by-step guide, and a narrated video.

    LayerpathLayerpath

    The free plan offers more than it first seems to: one seat, unlimited projects (with three published at a time), and five watermarked video exports per month. Limited versions of Create with Agent, AI voiceover, and brand memory are included too. The agent also works inside Slack, ChatGPT, and Claude, so you can edit steps by just describing the change.

    Upgrade path: Pro costs $50 per seat per month.

    Guideflow demo toolGuideflow demo tool

    Guideflow’s free plan lets you build up to five guideflows from screenshots, with unlimited views and seven days of analytics. Demos carry a watermark.

    Localization is where Guideflow’s AI goes further than most tools on this list. Guideflow generates voiceovers in 40+ languages, offers 150+ AI avatars, and can translate a whole demo in seconds. You can even create an AI clone of yourself to present.

    Best for: Teams selling to international buyers.

    Guidejar demo toolGuidejar demo tool

    Guidejar connects demos and documentation. The free plan includes five guides for one user, browser capture, sharing, embedding, and PDF export. A watermark stays until you upgrade.

    Then, at $19/seat/month ($16 billed yearly), Pro unlocks AI voiceover and translation into 30+ languages. Higher plans add an MCP server, so AI agents can build guides and search your guide library.

    Best for: Teams that want demos to double as help-center content.

    Guidde demo toolGuidde demo tool

    Guidde focuses on narrated how-to videos rather than click-through tours. My demo came with an AI voice narrator, like something you’d find on YouTube. Its Magic Capture recorded my workflow and automatically created step-by-step descriptions of each action I took and why.

    I found this to be one of the smarter demo creation platforms.

    Guidde demo toolGuidde demo tool

    The free plan includes up to 25 how-to videos, works with any web app, and lets you record your own voiceover. AI text-to-voice is on paid plans; Business is the first tier with unlimited use.

    Upgrade path: Pro costs $19 per creator per month, billed annually.

    How to Choose the Right Platform

    Start with your goal, not the feature list.

    • Want an AI agent on your site now? Try Supademo, since its free credits let you test the agent at no cost.
    • Need pixel-perfect HTML demos? Navattic gives you HTML capture and Copilot on the free plan.
    • Care about data control? LiveDemo’s free self-hosting is unusual in this category.
    • Make training content as well as demos? Layerpath, Guidejar, and Guidde turn one recording into several formats.
    • Selling worldwide? Guideflow and Supademo have the strongest multilingual AI.

    In my view, Supademo is the best place for most teams to start. It was the smoothest tool in my testing, and its free agent credits let you try the AI agent itself without paying anything.

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  • More dumped pet remains found at new Bulacan site

    More dumped pet remains found at new Bulacan site

    Another site containing pet remains dumped in plastic bags was discovered on Saturday in a densely vegetated area in Barangay Gaya-Gaya, San Jose del Monte, Bulacan.

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  • Ruffa, 40 lbs na ang nabawas sa OMAD!

    Ruffa, 40 lbs na ang nabawas sa OMAD!

    Sana all 40 lbs ang na-lose ni Ruffa Gutierrez.

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  • Replit CEO Amjad Masad says AI coding agents will scale from one per user to 10,000 — and the winners are infrastructure companies — BigGo Finance

    Replit CEO Amjad Masad says AI coding agents will scale from one per user to 10,000 — and the winners are infrastructure companies — BigGo Finance

    Replit CEO Amjad Masad has a warning for anyone still processing the idea that a machine can write working code: you are not finished yet. “I think with AI, everyone will have to go through this period of denial and then depression and then eventually acceptance,” he told Paul Graham on the Y Combinator Startup Podcast. Masad says he personally grieved the loss of programming as a craft around 2020 — years before the demo that made his company, and eventually the entire tech industry, synonymous with the phrase “vibe coding.”

    The striking part is not that Masad saw it coming. It is why Replit, a small cloud coding platform, beat the world’s best-funded AI labs to a market they were better positioned to attack. His answer is a lesson in where advantage actually lives in the AI economy — not in the model, but in the machinery an autonomous agent needs when it is done thinking and has to actually run a program. That distinction matters for investors trying to figure out which companies capture lasting value as AI capability floods the market.

    How Replit shipped agents before the model companies did

    Masad traces the idea back to 2008, when he wanted to program on a Symbian phone. Replit began as a collaborative coding environment in the browser, then spent years building components that seemed mundane at the time: code execution, sandboxing, cloud deployment, databases. When large language models advanced enough to drive agents, Replit already had the pieces. “When you put an agent into a repl, it’s like you’re collaborating with the agent. The agent is another user,” he said.

    The signal came from watching users who had never programmed before. Masad invited some to the office and saw them copying code from a ChatGPT window into Replit, then copying errors back into ChatGPT, then pasting the fixes in — a slow, manual loop. The insight was to automate the whole loop with a single goal: “the program is working.” He said the model companies were surprised Replit’s approach worked at all, and that in 2024 the engineering harness needed to make an agent function was roughly 10 times more complex than it is today.

    Graham describes the July 2024 demo in terms that capture the moment. “Replit’s like this iceberg where there’s this visible bit above the water that’s like look you just tell it in English what to do and it writes your code and then underneath there’s all this stuff for deployment and sandboxing,” he said. The demo, Graham admitted, made Masad look like a Bond villain. Masad concedes the outfit — black shirt, not a turtleneck — did not help.

    The agent failed 30% of the time, and users did not care

    The launch in September 2024 was far from polished. Graham guessed the early agent failed half the time. Masad corrected him: “It’s about 30%.” Users tolerated it because the alternative — shuttling code between chat windows — also failed, and because non-programmers suddenly succeeded most of the time. Andrej Karpathy called it a “feeling of AGI” moment.

    Before the agent, Replit already had a signal most people missed. Autocomplete alone accounted for 50-60% of the code generated on the platform. The company had been an AI coding business long before it had a name for it.

    Replit data point Figure Context
    Code generated via autocomplete 50-60% Before full vibe coding
    Early agent failure rate ~30% At launch beta
    2024 agent harness vs today 10x more complex Models were less capable
    Engineer-built app vs Replit $100,000 vs $1,000 Two orders of magnitude
    Enterprise project scoped vs spent $10 million vs $250,000 Replit-replaced internal project

    What is underneath the iceberg

    Masad’s moat is not glamorous. Replit built its own file system from scratch so that an agent’s changes are transactional and fully reversible — in plain terms, if the agent breaks something, you can always undo it. The company employs kernel and operating-system engineers. Its cloud services let an agent provision databases and deploy real infrastructure through tool calls, not screenshots of instructions.

    That depth is winning enterprise deals, Masad argues, because large buyers care about reliability and security. He says many competitors do “really reckless things” with security when agents write code, while Replit’s guardrails make the product “sometimes slower, sometimes more expensive” — a trade-off enterprises accept. The candid admission embedded in that pitch is that Replit is deliberately choosing to be slower and pricier than newer entrants, betting that trust outlasts speed.

    The early technical war was uglier than the current product suggests. In 2024, foundation models had no native edit tool, so Replit built one. Models hallucinated line numbers, forcing Replit to make the edit tool “ridiculously robust.” Models also got lazy, writing a function and stopping halfway with a note to finish later, producing code that would not run. Masad says both OpenAI and Anthropic had the same bug, which he attributes to chat-model training that rewarded stopping early rather than producing mountains of text. Replit had to detect the pattern and loop. Today an agent can simply be given a shell and will use basic commands to do everything, making the elaborate IDE-for-agents layer unnecessary — a reminder that each generation of models erases someone’s engineering advantage.

    The business model nobody expected: scrappy insiders replacing outsourcing

    Replit’s first paying customers were people who would otherwise hire outsourced developers. The economics explain why. Graham said he initially thought outsourcing shops were a terrible business — and then realized his mistake. “Arguably the whole existence of the outsourcing shops was evidence of a market there,” he said. “I thought of them as just terrible — but instead I should have thought, wow, that’s a sign of demand.”

    Masad puts the gap at roughly $100,000 for an engineer-built app versus about $1,000 on Replit. Inside large companies, the buyers are not the IT department. They are ambitious non-engineering staff — a sales lead building a tool for the sales team — who then get promoted, which reinforces adoption. Masad cites customers replacing systems scoped at $10 million for about $250,000 using Replit. He acknowledges an identity question inside Replit about whether enterprise work fits the mission, and resolves it by framing those users as entrepreneurs rather than bureaucrats.

    He also killed a product on the strength of the same logic. Replit Bounties, which paid teenage hackers on the platform to take jobs, grew fast — but Masad shut it down. “That’s the thing about the AI business today is that you have to just accept that everything that you’re doing is like getting commoditized constantly and you have to be doing the next thing,” he said. His forecast is blunt: human-intermediated outsourcing marketplaces are a dead business because people will ultimately ask agents for the entire thing directly.

    Token rationing is the wrong control, and the ROI problem is the real opportunity

    Ask Masad about how companies should govern AI spending and he gets animated. Many firms ration tokens — $100 per person per month — which he says is backwards. He argues companies should measure return on investment instead, because one person can drive 100 times the output of the next. Helping companies identify where valuable work is actually happening, he says, fixes “the biggest problem inside big companies.” Graham notes that this is a far larger problem than vibe coding.

    The next bet: the self-driving company

    Replit no longer describes itself as a vibe coding company. Masad’s expanded vision, laid out in a blog post called “the self-driving company,” is that accessible software creation will change how firms are organized and how work gets done — with Replit as its own first customer and laboratory. “He always knew accessible software creation would be transformational but did not appreciate that it would change how companies work generally — because the core of company work is not programming, except now it may be.”

    Graham identifies this as a pattern of the best startups: they are already big and then think of a new thing as if they were a new company. Masad says reinvention is now mandatory rather than optional because AI is a massive commoditization force. On execution, he warns against founders announcing a grand strategy; instead, let customers tell the story and pursue increments — find a customer doing a certain thing, help them, then generalize. He calls the agent launch a discontinuous moment externally but incremental internally.