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Portal + Portal 2 115 comments without any mention, is this too obvious?

• harry8 8y ago
  I loved these games. I can't remember learning from them. What have I forgotten?
  • 1011_1101 8y ago
    Basic physic concepts, like gravity, friction, velocity or optics. If you were already familar with these concepts then training/experimenting would be a better description than learning. Afaik there were even schools using this game in classes.