Is the philosopher's concept of knowledge an outlier?

This is amusing, if not wholly surprising (after all, if the philosopher's just matched the "ordinary" one what work would the philosopher be doing?):

We find that academics and laypeople share a similar concept of knowledge, while philosophers have a substantially different concept. These experiments show that (a) in contrast to philosophers, other academics and laypeople attribute knowledge to others in some “Gettier” situations; (b) academics and laypeople are much less likely to attribute knowledge when reminded of the possibility of error, but philosophers are not affected by this reminder; and (c) non‐philosophy academics are overall more skeptical about knowledge than laypeople or philosophers.