That's not really a good comparison, They've done actual tests for London cabbies and found that they had measurable difference in their hippocampus due to the

That's not really a good comparison, They've done actual tests for London cabbies and found that they had measurable difference in their hippocampus due to the spatial manipulations that they have to do. Whereas the difference between two developers one who remembers the exact parameters for some random arbitrary library and the other who relies on autocomplete is probably negligible. There's a huge difference between rote memorization and fluid intelligence. What's more important is your ability to solve problems and develop new algorithms and you can do that in pseudo code without memorizing a single pointless parameter list.