Have the first edition and I had the PDF version before the print was released I'm pretty sure... it was a thing with those Ruby/Pragmatic books when they were 'in development'. Still have my K&R The C Programming Language from 97 with my notes in it.
Repair men will tell you liquid detergents of any kind wear out dishwashers and washing machines much faster. To say nothing of all the stabilizers/additives and dyes. The best thing to clean with is powder to make your machine last. Also shipping water (liquids mostly water including pods) is a bad idea in terms of weight and cost. Liquids and pods are great for driving new unit sales. Tablet seem to be in the middle but they of course caking agents use to make them into pucks... why not just use powder?
I worked on a PCI-DSS project at a major consumer electronics retailer almost 17 years ago as an AIX/Solaris specialist.
At that time their 'web store' just put paid orders in a queue and a room full of humans typed the orders into the green screen which had all the actual inventory.