I have one observation to add.
Grants introduce bias to the scientific community.
If a scientist has interest in a subject, they are likely to search out grants to help them fund their experiments. The more grants there are for a certain hypothesis, the more experiments will "verify" this hypothesis.
It is unfortunate most science is not furthered by highly independent studies, but instead the purse strings problem introduces bias.
Yep Scientist have to put food on the table just like the ditch digger and just like the ditch digger might prefer a particular kind of ditch to dig, both must work with the order he has. Scientist are in the same boat as everyone else. LOL