And not just any worm, but a C. elegan, which always grows the exact same way every time. The whole reason those worms are so well understood was due to ease of analysis. Hell, it always has 302 neurons which always wire up in the same way. It couldn't be easier to simulate, and it's really hard to simulate!

To be clear, open worm is not even close to serving as a viable animal sim for bio research on worms even