[cornelis]

Why is this sad? A scientist who is well grounded in the philosophy of science performs no better research than one who isn't.

Because we are human beings before we are scientists.

[cornelis]

Why is this sad?

I don't know, because ignorance is pitiable wherever it shows up?

[Nebullis]

Because we are human beings before we are scientists.

Here's a good book for human beings who really can and do think about philosophy of science issues:

Error and the Growth of Experimental Knowledge (Science and Its Conceptual Foundations) by Deborah Mayo.

There's even a nice little review right here.