The phrase "to fit the theory" means that something matches or corresponds with a particular hypothesis or explanation. It implies that the evidence or observations support the theory.
Sentences with «to fit the theory»
However, he conveniently ignored data from 16 other countries that did not fit his theory. (wellnessmama.com)
I tried to find an exact date which fits my theory and was not able to, so I will admit that this is a major flaw in my theory. (redeeminggod.com)
But evolution is more than change, and every theory accepts as evidence only what fits the theory. (faith.org.uk)