He gave them enough inspiration so they determined that it was the truth......that's how most of the Bible was written....by Inspired men...
You make your God look really sloppy, give some inspiration to men and let them make up unbiblical events (Mary assumed into heaven) and then saying that is how God works. Baloney.
ALL of the Bible was written through men WITH the help of the Holy Spirit.
Men being given enough "tradition(al) and actual evidence to determine that Mary had been assumed into Heaven"
Sounds like the evidence for the LDS scriptures...No scriptures even hint at Mary's assumption, it's made up tradition.
how did the evangelist(sic) know what He prayed to the Father? how did the evangelist(sic) know what the devil said to Jesus?
how did the Evangalists know ANYTHING about the birth of Jesus, the manger, the shepherds, the singing Angels, no room at the inn.....please...
You have been taught how the Holy Sprit works multiple times, so I'll make this short.
The Bible is God breathed, the Holy Spirit gave, in many cases, the knowledge of events they did not see so they could write them down.
The Catholic church needs a catacizm (or what ever they are called) to teach about the Holy Spirit, and needs to find a Christian to do it.
The answers to your questions are so easy, mature Christians are aware of them. But some need to be taught the milk of the scriptures and learn them before going on to the meat.
Maybe you can find a Christian Bible study group in your area.
And that's the ONLY assumption that has happened.