I think we are all creatures of habit, Bob ~ it's just which habits. I, for example, rarely read a book from the beginning to the end [a habit that began in childhood & sends my B&W linear thinker into meltdown

]. I begin wherever I find something interesting & then read towards either end fairly randomly. I've done this all my life because for me a book is just like a jigsaw. It doesn't matter what order I acquire the pieces, it will all fit together to create the big picture. History works the same way but I think it is why I have always had so much trouble with math & some science. They are very much linear disciplines: line on line, precept on precept. That gets old very quickly for someone like me.

The joke in our house was we had 5 kids because 5 is the only times tables I knew.

I'm just glad there are linear thinkers around who invented things like calculators to make a linear world easier to cope with.