> I can make everyday plans with greater precision, knowing exactly how many minutes I’ll need to shower or drive or buy groceries or do laundry or water the plants.
I used to think like this, I tracked how fast different routes took to work to optimize and decide. I optimized where I put what during laundry to make it less bothersome, and so on. But do you need 10 years of this? For me, after doing it a couple of times I basically got it.
A shower, I don't need to track it to know I can do it between 2-15 minutes. Or less, if I REALLY need to get going.
I've also built my apps, and used pre-built ones. But each time I've stopped, I haven't really missed it.