The one about direct measurement wouldn't require anything else. You're just climbing the stairs and counting. Doing it the "right" way would also require the s

The one about direct measurement wouldn't require anything else. You're just climbing the stairs and counting. Doing it the "right" way would also require the stairs (well, and elevator would work for that too, but I would count the elevator as an additional item which itself uses complex mechanics and cables to get you to the top.)