[jaredsohn]

9-6 could include a lunch hour.

A sibling post to yours says "Treehouse developer here. It's actually four 8s." so that is likely the case.

[denibertovic]

Working from 9-5 includes lunch as well. The fact that 9-6 includes lunch, the fact that it needs to be mentioned, is ridiculous, you still spend 9 hours in or around the office.