“If you don’t tell AI which moves are valid, **it may find and exploit strange loopholes that completely break your game**. For example, in 1997 some programmers built algorithms that could play tic-tac-toe remotely against each other on an infinitely large board. One programmer, rather than designing a rules-based strategy, built an AI that could evolve its own approach. **Surprisingly, the AI suddenly began winning all its games. It turned out that the AI’s strategy was to place its move very, very far away, so that when its opponent’s computer tried to simulate the new, greatly expanded board, the effort would cause it to run out of memory and crash, forfeiting the game.**” --- **Tags** — [[quotes]], [[artificial-intelligence]], [[ai-problems]], [[teaching-anecdotes]] **Source** — [[202307171347 — B — You Look Like a Thing and I Love You]]