And I just thought of something. There's the Wisdom Gem Holder from Sub 2 in 859 and WIQ. We have plenty of spare Wisdom Gems in SubVerse. I have 4 remaining after using 2 in 001 and 917. Could we be able to use two on them to unlock some things somewhere?
Maybe, right now they do nothing, if Mateusz one day decides to make such an update, he would make it noticeable in a way, like putting an engraving in the box, since otherwise nobody could ever notice the change.
Now, here's the problem with this.
If you played Submachine 2, you'd probably know to use a gem there.
But - if you haven't - that would be like most illogical puzzle in all subnet.
In my opinion - wisdom gems should be used as a source of energy in places that are clearly labeled as "I need energy to work". energy sockets, batteries, etc.
Hope that clears things up.