And guys will say looks matter, but they'll also say things like "Well, she should be smart and kind." And you know those are... so the typical responses and if you give them just a few options, like five or six, then they will rate them on the very characteristics that they said were really important to them.

You get to decide how you're going to look and what you're going to be when you grow up and when people learned that my parents actually had an arranged marriage people thought that was the most horrific thing on earth. I mean how could anybody allow their marriage of all things to be prescribed by somebody else?

The typical American reports making about 70 [choices] in a typical day.

What we found was that of the people who stopped when there were 24 different flavors of jam out on display only 3% of them actually bought a jar of jam whereas of the people who stopped when there were 6 different flavors of jam 30% of them actually bought a jar of jam.

The first thing we looked at, in what case were people more likely to be attracted to the jar or jam, so in which case are people more likely to stop when they saw the display of jams and what we found was that more people stopped when there were 24 jams.

One day I went to the manager and I asked him whether his model was working and he said, "Well, haven't you seen how many customers we have in this store?" And yes indeed I had. I mean it was definitely attracting a lot of customers, even attracting tourist buses that would land up at this store and people would go through the store and marvel at all the options, even sometimes take photographs of the various aisles.

The quality of health care continues to improve, and people are living longer, but these developments mean that we're likely to eventually find ourselves in a situation in which we're forced to make difficult choices about our parents, other loved ones, or even ourselves that ultimately boil down to calculations of worth and value.