Travis Walton's new theory.
Travis Walton has gone on record that he no longer believes his abduction was due to malicious intent. He now believes that the light-beam that hit him was either entirely an accident or affected him more severely than the aliens had intended. He was brought onto the alien ship because they knew, if left alone, he would die.
Everything in his account of what happened on board the ship fits this theory. The object on his chest (probably an attempt to keep him breathing), the aliens who in no way attempted to harm him after he woke up, the fact that they left him alone (probably to give him time to calm down and gather his thoughts)...it all makes sense to Travis now.