I don't think the person who made this understands the concept of life hacks. They're supposed to be easy and, most of all, free (or at least cheaper) alternatives. For instance, I haven't seen a single house where they had a pencil holder (except for my grandparents' house), but every single house I've been to had toilet paper.
I can agree with the "tell time by holding your fingers between the sun and the horizon"-hack, though. There's the three factors the author mentioned, plus the fact that the hack depends highly on where you are. The sun will be more or less directly above your head at noon on the Equator, but at noon in Norway it's not even halfway up.
I can agree with the "tell time by holding your fingers between the sun and the horizon"-hack, though. There's the three factors the author mentioned, plus the fact that the hack depends highly on where you are. The sun will be more or less directly above your head at noon on the Equator, but at noon in Norway it's not even halfway up.