vkreso

You mean another example of apples and oranges?

Is software and transportation really a good example?

The west lost? When did that happen?

Well, all bad practice will lose money only if such practices get public.

Both parties need to have a specific good or service the other wants for barter to be successful. Money, however, can serve as a medium of exchange eliminating that problem thereby being useful enough to let yourself get taxed for its use.

Latin dē, especially in etymollogy of deduction, usually means "of" - meaning: regarding, in respect of, concerning etc. (Look de facto, de jure, de dato, de futuro...);

with dūcō - meaning to lead, to guide forming deducere as present active infinitive;

in contrast with the prefix ab which usually means "from" or "away from" as in "ab ovo" where "de ovo" would mean something regarding the egg instead of originating from or away from the egg (also look ab initio, ab extra, ab hinc...).

Similair to the word absent coming from latin absens, absum where ab means "away from" and sum means "I am", taken together meaning "not present".

Thus in the context of logic where deduce would mean going in one way, abduce would imply going away from that way i.e. reverse direction.

I use a Schneider topball 845. It's very consistent, smooth, sharp and without smearing.

It's 0.3 mm though, but a rollerball so it leaves a more saturated and wider writing trail than a ballpoint pen.