How the bus affects perceptions

I like the read small format newspapers on the bus - things like The Economist and The Spectator. I am now in the habit of folding down the corner of a page if I think there is something worth following up on that page - like adding a book to my Amazon wish list, or blogging about a particular topic that catches my eye.

But what I am finding of late is that I fold down all these pages, then get home and find that they no longer interest me. What on earth made me think tonight that I'd want to read a book about Ronnie Wood? Or a book on musicophilia?

They must be pumping something into the air conditioning on the bus. Probably helps to keep the proles happy and contented on their way to/from the daily grind.