I think the baby stage is much more than 5% of the total hours that parents spend directly interacting with their kids. My cached memory of when I did a fermi estimate of this is that, if you’re an UMC American, 25% of the hours you spend directly interacting with your kid are in the first 2.5 years, half in the first 6 years, 75% in the first 12 years (and 90%+ before they turn 18).
I think the baby stage is much more than 5% of the total hours that parents spend directly interacting with their kids. My cached memory of when I did a fermi estimate of this is that, if you’re an UMC American, 25% of the hours you spend directly interacting with your kid are in the first 2.5 years, half in the first 6 years, 75% in the first 12 years (and 90%+ before they turn 18).