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Thought I'd riff on the art of quoting for a bit; In the world of professional making is a concept we call the "quote". This is not me spouting Benjamin Franklin but rather me telling you I can make your thing for some amount of money. If I do this well, my business prospers. If not, we have another concept known as "eating a job", where you not only are not making money but it's costing you money to finish the job.
Another event in the art of quoting is the "quote of the year". This is the job that you want really, really badly. The job that will make everything else pure gravy. So you spend a lot of time with this one, making sure it's as good as you can do. You never get the job, of course, but you never know.
So quoting a job is the real game here, a role of the metaphorical dice. Fortunes, or at least income, is won and lost here. Probably why I don't go to casinos.