> If Python or JS sit idle waiting for user input, are the efficiencies really so different? Nit pick: Python is typically at least an order of magnitude slowe

> If Python or JS sit idle waiting for user input, are the efficiencies really so different? Nit pick: Python is typically at least an order of magnitude slower than JS, it's a whole different class of slow. > Developer time also has energy cost in AC, transport, etc for a human. Yes and fixing bugs in production is especially expensive. Presumably that's why Python is now trying to retrofit static types. There are statically typed languages that are just as terse as Python.