> Having good ideas is most of writing well.
Disagreed. Written style matters, and whenever it doesn't matter, neither would it matter in spoken form. Your writing style happens to be lean, concise, reduced. But that doesn't just happen -- or are all your essays first drafts? Would they work as well in flowery prose? > (...) it was a revelation to me how much less ideas mattered
> in speaking than writing.
Disagreed. I think I've got a grasp on your basic point: that the effective or required ratio of flashiness to content is invariably higher in talks than it is in essays. In the general case, that is of course not true; flashy but relatively superficial essays evidently exist, and (as you admit) academic talks can exhibit remarkable SNRs. But I'd go further and say that your rule of thumb rarely if ever applies in a meaningful way. Rhetorics are crucial in both media, and communication of ideas isn't the sole purpose of verbal interaction -- be it written or spoken.What you're suggesting may apply to your personal approach to writing and speaking. As you mention, you feel much more comfortable expressing your thoughts as essays. That's great. There's absolutely no further conclusion we can draw from that.