even fish avoid catastrophic forgetting fantastically well. Train a fish to escape from a net through a small escape hatch, leave the fish alone for an entire year, and then test it again. During this long stretch of time, its brain will have received a constant stream of patterns, learning continually to recognize new smells, sights, and sounds. And yet, when you place the fish back in the same net an entire year later, it will remember how to get out with almost the same speed and accuracy as it did the year before.
