Talk:Maximum Passengers Per Hour/@comment-7944029-20131204044835/@comment-15636815-20131205015508

You imply that the statement, "At the cost of additional resources", is a useless statement of the obvious, because all upgrades cost resources. However, if the statement were useless, it wouldn't be there.

In longer form, the footnote is saying, "A Post Office costs 100 wood + 100 nails.  If you use Post Offices, you'll get a certain output of passengers per hour.  A Bakery costs 200 wood + 200 nails.  Therefore, if you're willing to spend more (at the cost of additional resources), you can get a higher output."