I know this could be a bit generic question, but for the sake of providing context this applies to a Transcriptomics Thesis.
Yesterday I've seen two researchers discussing about if it was really necessary for a post-doc geneticist to visit the place where the blood, weight, height, hair (and other) samples are taken.
From your experience, it is really necessary for a post-doc to travel and visit the field? Does that add real value to a Thesis? Shouldn't the sample collectors report everything like their name, how they measured a sample, etc?