[sojuz151]

But the fact that the computation diverges is not a problem by itself. All QFT diverge but this can be fixed by renormalisation. Problem is that for gravity this would require infinity many parameters and the theory could match any observation

[andyferris]

My understanding was that renormalization only needs "parameters" when the computational methods are approximate.

I thought the issue was more that we have no idea how to perform appropriate calculations for SM+QG? Maybe I'm wrong?