If you can actually prove this among all the competing explanations you can collect your Sveriges Riksbank Prize in Economic Sciences forthwith. It's not as simple as that.
https://en.wikipedia.org/wiki/Business_cycle#Proposed_explan...
https://en.wikipedia.org/wiki/Business_cycle#Proposed_explan...
“It is difficult to get a man to understand something when his salary depends upon his not understanding it.”
So far no one has been able to provide real proof or empirical evidence, only theories from assumptions we know are not accurate.