Really thinking-heavy puzzle game, if this was sitting in my steam library right now as-is, it'd be sitting next to games like Bean and Nothingness and Snakebird as one of those games I come back to often, just to get absolutely obliterated by the depth of thought needed to solve some of these - which is pretty impressive given the simple mechanic set! I think with both game types, you've got a very sokoban-like engine here, with how you learn consistent ideas & concepts that then need to be continuously iterated & expanded upon as you solve puzzles that build on those, rather than the kinds of puzzle games that ask the player to find the emergent interactions of disparate puzzle elements (Portal and Baba is You come to mind).
What's here is good, but if you ever were to flesh out this concept, I'd just add things - like more levels, a soundtrack, etc. - rather than adjusting the game you've already got. Might revisit this one when I'm in a puzzling mood.