Seems like a question where the answer has to be “it depends”.
There are some questions which have a decomposition that helps with estimating them (e.g. Fermi questions like estimating the mass of the Earth), and there are some decompositions that don’t help (for one thing, decompositions always stop somewhere, with components that aren’t further decomposed).
Research could help add texture to “it depends”, sketching out some generalizations about which sorts of decompositions are helpful, but it wouldn’t show that decomposition is just generally good or just generally bad or useless.
Seems like a question where the answer has to be “it depends”.
There are some questions which have a decomposition that helps with estimating them (e.g. Fermi questions like estimating the mass of the Earth), and there are some decompositions that don’t help (for one thing, decompositions always stop somewhere, with components that aren’t further decomposed).
Research could help add texture to “it depends”, sketching out some generalizations about which sorts of decompositions are helpful, but it wouldn’t show that decomposition is just generally good or just generally bad or useless.