I'll start.

I believed that "keyword density" mattered. I spent hours making sure our target keyword appeared exactly 3-4 times per 500 words. I used tools that highlighted which words were "under-optimized." I even re-wrote paragraphs to squeeze in one more mention.

Turns out that hasn't been a real ranking factor for over a decade. Google's RankBrain (2015) and BERT (2019) made keyword density obsolete. These models understand context, synonyms, and user intent. They don't need you to say "best CRM for small business" five times. They know that "top CRM for startups" means the same thing.

What actually matters is topic coverage. Does your page answer the question completely? Do you cover related subtopics that a user would expect to see? Do you use natural language that matches how people actually ask questions?

At YC, investors outlined 8 startups across space, AI, gaming, and agriculture (most of them want to bet on futuristic ideas, e.g. space), and these sparked interest in funding them.

This was the pick:

1. Beyond Reach Labs satellite solar arrays that expand from table-size to football-field size in orbit
   Est. valuation: ~$100M+

2. Byteport next-gen file transfer protocol
   Est. valuation: ~ $30M

3. Hex Security AI agents that continuously hack your system to find vulnerabilities (Rev.: $1M+ run-rate in 8 weeks)
   Est. valuation: ~$100M+

4. Grazemate autonomous drones that herd cattle, track weight, and monitor land
   Est. valuation: ~ $30M

5. GRU Space moon factory turning lunar soil into buildings (starting with a moon hotel)
   Est. valuation: ~$100M+

6. Luel marketplace for real-world human data (video/audio) to train AI models (Rev.: ~$2M ARR in 6 weeks)
   Est. valuation: ~$100M+

7. Pax Historia AI strategy game where players rewrite history (e.g. Rome never falls) 35K daily users
   Est. valuation: ~ $30M

8. Stilta AI agent for patent lawyers (search + analyse IP faster, cheaper)
   Est. valuation: ~ $30M

Questions:
-> Ubuntu + x86_64 only. No ARM, no Mac (unless you run a VM) that cuts out a big chunk of hobbyists and researchers right away
-> Prompt sensitivity is a real concern if vague prompts give generic results, the "just describe it in plain English" pitch needs some asterisks
-> Multi-robot setups are experimental, which is a big gap for anything beyond single-robot prototyping
-> Requires internet to process every prompt so your AI copilot goes dark without a connection, even for local sims
-> Still early (v1.0.15 beta) rough edges are expected, but production teams should be cautious
-> The 60% stat frames simulation as a problem to skip, not a skill to build engineers who skip that struggle badly at sim-to-real transfer
-> Terminal-only, Gazebo-specific workflow is a hard limit if your stack uses Isaac Sim or Webots
-> And any proprietary AI agent in your core workflow = vendor lock-in risk
Curious how it handles URDF validation and collision mesh accuracy?
None of these are dealbreakers for students or solo researchers. But for engineering teams evaluating it seriously, these constraints matter.
Answers:
1. Our initial reach is for robotics developers who already use ROS and simulators, so they are already on linux. Most of the robotics frameworks are optimised and built for linux. You will have a hard time figuring things out on Mac with the all the open source tools and libraries.
2. Definitely. The more articulate you are with explaining what you want, better drift will run. "describe in plain english" is to communicate that this is better than before where devs have to hustle on their own.
3. Yes, and that is why we are solving it, and making this better.
4. We are working to bring integration for local deployments.
5. We are monitoring all bugs and crashes in production.
6. The skill to master simulations is not to be skipped at all, we want to accelerate the skill up instead with Drift, so that engineers actually focus on the physics and behaviour of robots in the sim.
7. That's why we are bringing MuJoCo, Isaac Sim and other simulators and plugin support really soon.
8. If the vendors are getting your work done from months to days, that is not a worry. And we will always have competitors so you have plenty of options! :)