When I'm wrong...
...which I am, from time to time, I admit it.
I still have to rewrite the "White Mars" website so until then I can't rest on my laurels, but I view it as a matter of professional conduct to admit when I'm wrong.
I don't believe one should avoid being ever wrong - that's such a conservative approach one would never get anywhere interesting. I like new ideas, and I try to encourage lateral thinking - but logicly, not sloppily!
ESA are in the sloppy basket right now.