Randomized tech trees, a la SotS

**What do you want to see?**
The ability to give technologies a percentage chance to be researchable for any given player in any given game, same as Sword of the Stars. The presence or absence of a technology should not be revealed until at least one of its prerequisites is visible. For instance, if Phased Energy Weapons requires Physics 3, then you should not be able to see whether or not it is available until you research Physics 2.

**How would it help players?**
It would reduce the ability to minmax your research because you wouldn't know right away whether your desired tech is available this game.

**Alternatives**
Dunno...

**Screenshots and mockups**
https://explorminate.co/sword-of-the-stars-research-tree/ - this article explains how it works in SotS

**Things to consider**
Need to nail down exactly what conditions would work best for techs with complex prerequisites (e.g. multiple prereqs or formulas). The tech tree browser should probably indicate whether a tech is known to be included, known to be excluded, or unknown status.