I think the durability of Blondie has to do with three things,

That's what they admire most about the horse, his durability.

We went from three closers to none.

From a durability standpoint, I don't know that there's much more you can do. We're real pleased with its reliability.

A nation may be said to consist of its territory, its people, and its laws. The territory is the only part which is of certain durability.

In 18 years, I've never seen somebody [faint]. Three times.