The context of the following conversation is As an experimenter Carson frequently ran tests on their friend Kendall, some of which could be quite uncomfortable.:
Cameron says Kendall is a pretty good sport when Cameron needs to run tests on him..
The friend responds How often does he have to do that?.
Cameron responds Pretty frequently. Some of the tests are pretty uncomfortable, so I'm glad he's not too sensitive about it..
The friend responds I would feel bad hurting him like that..
Cameron responds It's not too bad. Just a little discomfort, and it all in the name of science!.
The friend responds His work will be really important, so it's surely worthwhile for both of them..