I'm talking about putting in an order, and my GRANDCHILDREN being the ones to recieve it.
So the slow freighters wouldn't do "orders". They would ship commodities needed on a constant basis, so that your grandchildren would get the stuff requested in your lifetime, but you in turn would get what your grandparents ordered, and your kids would get your mother-in-law's order, there being no interruptions to the flow.
That's why the old sailing ships hauled grain. True, the waves of arriving windjammers created waves in grain prices, but the flow was still essentially steady.
The more plausible explations are that Warp 2 just isn't 8C, or that the writers in TOS didn't think more than 'Warp 2 is slow'.
Oh, but
that is a given!
We have no evidence that warp 2 would be 8c, but we do have wealth of evidence that 'Warp 2 is slow', yet a perfectly credible way to get from star to star. What we further know is that warp 2, or a bit less, is what freighters in the ENT era were doing, and spending months and sometimes years between stars for it. This probably rules out the 8c explanation, because travel times would always be years, then. But this doesn't give us a definite speed, because the trips by those ENT freighters were between fictional stars whose relative distances were unknown.
No, it would be the job of the navigator to translate the Captain's Order for 'Warp 6' into 'real speed'. The captain cannot and should not be bothered with minutae, that's not his job.
Indeed, that's how it would work in the real world, in a ship that can afford enough personnel that the skipper doesn't have to do navigation. The big guy orders a setting for the engines, dictated by company orders on what is economical, and makes a pious wish on arrival time, again dictated by those orders for economical reasons. The navigator tries to make the two ends meet, and constantly refines his or her suggestions to the skipper so that economy (and, if possible, schedule) is maintained.
Nevertheless, our Star Trek heroes often seem to suggest that the warp factors could be used as universal measures of speed, not just for their own ship but that of an opponent or ally as well. However, that doesn't need to mean much: the assumption would be that both friend and foe would operate in the same kind of "weather" or "currents", so a variable definition of warp factors wouldn't matter. And even if Klingon ships used "deviation marks" that don't perfectly match UFP "warp factors", the translators would take care of that, and so forth. All we need to assume is that "warp factor", while apparently an engine setting, isn't specific to a certain type or make of engine in a specific state of repair, but universally applies to them all.
Timo Saloniemi