And it is a dramatic error. If 4% of people only speak a functional programming language, does it mean that you never need to learn one? Just because the vast

And it is a dramatic error. If 4% of people only speak a functional programming language, does it mean that you never need to learn one? Just because the vast majority historically speak imperative doesn't mean it's the best for your business. Same for OSes. Diversity is source of wealth.