The Official LDW Guide for this Puzzle says that you need Level of a certain Tech, when you actually need (as correctly noted in multiple spoilers here). Since LDW "reserves the right to make changes . . . to the game guide itself, at anytime and without notice," I hope they'll exercise that right and make the correction.

And while they're at it, put a space in "any time"!

Also, there are clothes hanging from a bar on the clothing hut even BEFORE you build it, so yes it's easy to identify.