[jacques_chester]

Given that Pivotal wrote and then donated ownership of an entire containerised cloud platform, built from scratch, before any of Mesos, Kubernetes or Docker existed, I feel like we've done some fairly heavy original engineering.

We estimate every story. Sometimes hilariously wrong (Diego was a classic example of a research-heavy project blasting past the initial gut-check estimates and improving in accuracy as it matured).

But a lot of the time well enough to allow for useful business decisions to be made by ourselves and other members of the Cloud Foundry Foundation.

The reason that I keep saying that useful estimation is possible is because I do it every single week. Hundreds of my peers in Pivotal and partner companies do it every single week. Hundreds of client developers do it every single week.

But I hear that it's impossible. So I guess I'll change my résumé to read "Wizard".