The article says that the HP model is NP-complete. But water folds protein very quickly. I may be misunderstanding things here, but if protein folding (as oppos

The article says that the HP model is NP-complete. But water folds protein very quickly. I may be misunderstanding things here, but if protein folding (as opposed to a particular model of protein folding) is NP-complete, shouldn't it be slow in real life too? I recall reading an interview with someone who founded a company that builds computers for simulating biological systems in silico who thought that there were much better algorithms waiting to be discovered because nature can do it quickly. I can't find it now.