[Repulsion9513]

> You know that this is exactly how SpaceX won big? There were many a competent, credentialed people telling Musk that reusable rockets are a pipe dream, all the way to the first Falcon 9 landing and reflight. Some of them even continued giving such "competent and informed" advice for many months afterwards.

And there were also people saying it could be done. Where were those people for self-driving? (Oh right they were in the Facebook comment section with no relevant knowledge.)

> That's literally what it means, though.

No, it's not at all.

A goal is personal, or perhaps organizational. You need not announce something on Twitter in order to set a goal for yourself or for your company.