[aeternum]

While QFT makes some amazingly precise predictions in certain areas like the fine structure constant, it is nearly useless for predicting even most chemistry.

In practice, the computations required to use the QFT model are just too complex for modern computers when it comes to single atoms with more than a few protons, not to mention larger molecules. Instead, we must use simplified models like the Bohr model to make predictions about molecular bonds.

This actually seems to be very similar to AI where we understand not everything, but a lot about basic neurons, yet the emergent phenomena of intelligence is very difficult to predict due to the explosion of computational complexity.

[concreteblock]

That's a good point. I guess our current mathematics is not good enough to say much about the macroscopic behaviour of large interacting models.