Always remember your kid's name. Always remember where you put your kid. Don't let your kid drive until their feet can reach the pedals. Use the right size diapers... for yourself. And, when in doubt, make funny faces.

I used to work with mentally disabled people when I was 18 or 19, changing diapers and catheters. I was working, like, 16 hour night shifts, having to distribute meds and go capture people who would break out of the house. Sometimes they'd have seizures, and we'd have to rush them to the hospital. That was an interesting time, very humbling.

When I sent those scripts, that was the lowest point of my life. We'd just had our second son, and when I went to collect them from hospital, I went to the bank to try and get some money to buy some diapers, the screen showed I've got $26 left.

As we have seen again and again, when Amazon doesn't get the economic conditions from suppliers that it seeks, it simply goes its own way. In the book business, that has meant publishing its own titles under the various Kindle imprints. Now it's making diapers.