Also true. I think we're not going to get a good handle on what is achievable and what is optimal for a few decades at least. I have no idea what space industries might look like in say 100 years if the cost of access to space is less than 1% of what it is now, so I don't think it's a decision anyone is in a position to take right now. But short term, by which I mean the rest of my lifetime of 35+ years if I'm lucky, it's looking interesting.