Ok, so I didn't have a thought yesterday. Nor one the day before that. So let's say it's "A solitary thought today". This is one for the mathematicians and theologians to discuss. I know they're big readers of my blog :)
The square root of minus one, i, is like religion:
They're both an extra plane which are difficult to define in the physical space but which are essential to solving many problems. You don't need to understand in tangible terms what you are dealing with, but you come to the right answer when you re-emerge into the real world.
Tags: mathematics, religion, imaginary, theology