I’ve been ok an investor double blind study ( data was collected in real time and we didn’t know who had placebo and who didn’t). On the scientist side of things it’s exciting to have samples run it and see natural true results, it’s a good feel to see that something is working. I remember my coworkers and I wouldn’t constantly try to guess which sample belonged in which group. It’s scary when we get negative result because it can be good or bad thing depending on the group and drug. It was fun anxiety if that is a thing. When everything was done, we were unblinded and everything went well.