Given scene/plot descriptions from movies or TV shows, and given a specific question about the scene, summarize the question into a title

In Terminator: Genisys, Kyle Reese was sent back in time but didn't have a child with Sarah Connor within that timeline.   How is John Connor alive if Kyle and Sarah didn't get together in 1984?
How is John Connor alive if Kyle and Sarah didn't get together in 1984?

We already know that Captain America is the first avenger.  There is a Thor in the avengers team and he is older than Captain America. Why do we call Captain America the first avenger?
Why do we say that Captain America is the first avenger?

In the iconic Battle of Stirling Bridge scene in the film Braveheart, English heavy cavalry knights charge with a lance in their right hand and a shield in their left hand.   I recently watch this battle scene again and noticed one particular thing: English knights should have carried close quarter melee weapons.   I understand for heavy cavalry, they are supposed to charge towards their enemy over and over again on their horses, but should they not consider taking a melee weapon with them, for example, a mace, a sword or a dagger so that they can defend themselves when they become dismounted.   I think it is a detail Mel Gibson overlooked when making this movie.

Are the cavalry knights missing close melee weapons in Braveheart?