Although Taming the Turing Machine is about avoiding confusion in the digital world, broken mental models exist in the physical world too. Here's a favourite example. What do you think the UK road-sign on the left (the rectangular one) means?…

I'm well aware that writing a book and a blog about good interaction design (including a healthy sermon on aesthetics) is setting oneself up for – what shall we say – friendly critique?  I've worked hard to make this website…