From my point of view, even when someone is on the correct 'side' of an argument, if they got there by mistake it's still important to point that out. Both fortran77 and CoastalCoder can be wrong at the same time.
Is "I think you misread that line" far ruder than I thought it was?
...surely "I doubt my mom knows" wasn't supposed to be a developer anecdote that I misunderstood massively?
Asking because I doubt e.g. my mom knows that NTFS has symlinks.