[timbuckley]

You can have convoluted or simple FP programs as you can have the same for OOP. Nonetheless, is paradigm better at yielding more robust software you can reason about well more of the time? I would say yes, and FP does this.

[AnimalMuppet]

It depends on what the problem is. If the hardest part of of the problem is reasoning about the algorithm, then FP may be great. But then you get into things like hard real time, where the hardest part is reasoning about time. Or high-performance computing, where an essential part is controlling memory layout. Or...

But you did say "more of the time" rather than "always", so I'm not actually disagreeing with you.