Do you offer too many products?

A few month ago I viewed a TED talk by Barry Schwartz the author of The paradox of choice – Why less is more. He began with a little story that I wanted to retell:

When I was young there were 3 types of jeans, they did not have a great quality but it was easy to decide. In our days if you go into a store there are 1.000 types of jeans. He tried 25 of them and then he bought one. It was the best fitting jeans he have ever worn but He was unhappy with his choice.
I just checked out a famous german fashion dealer. They have 1.537 different kinds of jeans in their Men – Jeans category. So how should I be able to find the best jeans for me? Some smart recommendation technology is necessary to help me to find a good fit. […]