

Because an engineer tested this and found the correct water pressure to lift the sphere just a little bit on the water. And the craftsmanship needs to be spot on. No dents or big imperfections on the sphere, a perfect fit with equal water dispersal on the pedestal.
It can happen to cars too when rain water accumulates on the road. If they go fast enough the tires lose contact with the ground and the car will become unsteerable.









I found that’s the ultimate decision criterion for me. If you’re fine reading on your phone, i.e. you don’t lose sleep because of the extra light spectrum you beam into your face, just stick with the phone. It’s always there and you are already trained to keep it charged around the clock.
Reading ≠ reading; people have different concepts in their heads. There are people who need the haptics of an actual book. Some may think reading on your phone kind of cheapens the experience. It’s where the diarrhea stream of social media also comes through. Or work emails. I’ve talked with a colleague once and she insisted on a reader device because she didn’t want to give the impression she was on Instagram while reading at the airport. So you need to figure out these preferences as well.