You don't need that until the very end. They should be modeling many houses first, and they can get that by having employees measure their own house. They should also know something about the edge cases and have a lot of very unrealistic houses modeled.

Then they should have a lab with real furniture and movable walls so they can do controlled real world tests. Once the above tests are done you add confidence with random real world tests.

The types of problems seen here are things that your lab tests should fail and keep you out of real world tests. Particularly when the test subjects don't have some sort of test agreement

Lack of honesty is only one issue. Destroying things, leaving mess and forcing someone else to fix it iw the big one.

And that is very much on brand for these groups.

VC ALERT!

Hello JumpCrisscross aka Ski. Fly. Growth equity VC,

The math is simple: they have enough money to rent a ton of Airbnbs, scan them in 3D, then 3D print replicas, maybe a hundred or two apartment layouts stacked in some giant abandoned warehouse, and get all the randomness they need. They can even introduce extra randommness by paying Jeff Goldblum to do a live play-by-play of a whiz kid algorithmically moving things around with the layouts according to some complex formula based on the flaps of butterly wings measured in real-time on 6 continents. Hollywood set builders do it for less, but if you have the money, might as well blow it on something awesome.

Maybe you meant well. But a lot of us here are trying to say, they can afford to not act like their mission matters more than being considerate of others. It's not like they'll die tomorrow unless they can steal a loaf of bread, and at least Jean Valjean recognized his error made in a moment of desperation. Too many SV startups since the start of this century have acted like it's their right to be rich, no matter what damage they leave in their wake.