"Happiness in intelligent people is the rarest thing I know." - Ernest Hemingway

I dislike all these ideas about measuring intelligence - as Howard Gardner argued in his Theory of Multiple Intelligences, there are many different kinds of intelligence, and valuing one kind over another is inherently problematic.

But casting all that aside - if we're going to look at a hypothetical nice gal who isn't particularly bright in the conventional sense (though she may be quite pretty), we might say, along with Hemingway, that she is, on average, less troubled than her brainier counterpart.

Why? I leave that to each person's own reasoning, but there could be many factors. To begin with, the superintelligent Überfrau THINKS. A LOT. She could overanalyse a teaspoon. She thinks about everything that could wrong, she thinks up clever methods of making things better that nonetheless make things worse, due to the indefatigable Murphy's Law. She wonders if that guy looking at her thinks she's cute, then deduces, based on algorithms of his behaviour around her, that he does. So when he comes round to talk to her, she has no clue how to act. She behaves very strangely and scares him away.

The self-professed dumb blonde never tries to make things happen. She doesn't interfere with life. Life just happens to her. She doesn't overthink, but follows her natural instincts. The same guy now turns his attentions to her. She responds genuinely with a bright smile and perhaps a giggle. She unconsciously bats her lashes at him, and looks at the floor when he compliments her.

The dumb blonde lives happily ever after with seven children; the brainiac continues to ponder over her spoon.

Methinks the lady doth think too much.