We hear some people say philosophy doesn’t matter because it is not useful, only confuses, and gives no evidence of progress anywhere compared to science.
How would you answer this complaint?
I would reply as follows:
The statement that philosophy doesn’t matter is itself philosophical. If philosophy doesn’t matter, then that statement, being part of philosophy, doesn’t matter. Ergo, if philosophy doesn’t matter, then it doesn’t matter that philosophy doesn’t matter.
And if it doesn’t matter that philosophy doesn’t matter, then the (purported) fact that philosophy doesn’t matter couldn’t have any implications that were relevant to anything in particular (otherwise, the statement would matter, and hence philosophy would matter).
Now, the statement that philosophy gives nothing and that we should ignore it and focus on the physical sciences or other “useful” pursuits (where, presumably, a pursuit is “useful” if it makes us die slightly later or allows us to leave our corpse on a slightly larger pile of stuff) is a consequence of the statement that philosophy doesn’t matter.
But then the statement that philosophy doesn’t matter has a meaningful consequence (in fact, a philosophical one), and so it turns out that the statement does matter. Which is a contradiction.
Q.E.D.
Admittedly, I would reply in this way primarily because I like messing with people who say things like this. Saner responses exist. They do mostly involve that any discussion of what matters is inherently philosophical, though.