You can picture a facilitator as whatever clears the road so that other people or other processes can move. It does not walk the road itself and it does not choose the destination. A person doing this asks the questions, holds the time and keeps the discussion open until the group arrives somewhere. A thing doing this — cheap data, warm weather, trust — simply removes what was in the way. Either way the word points at the one that made the moving easier, never at the one that decided where to go.
From the word’s history
The source gives the word as facilitate + -or: facilitate means to make something easy, and -or names the one that does it. That is exactly the modern core — the one that makes things easy — and -or names either a person or a thing, which is why both senses fit under one word.
來源資料說這個字是 facilitate（讓事情變容易）加上 -or（做這件事的那一個）。合起來就是「讓事情變容易的那一個」，跟今天的核心畫面完全對得上。而 -or 這個字尾本身不分人或物，這也說明了為什麼「引導者」和「促成因素」可以共用同一個字。
packet wiktionary entry for facilitator (kaikki:3f6f69a190036ae4:890842640:11753): etymology_text 'From facilitate + -or.'
登入就可以看每一支怎麼連回核心畫面。