Thylacine really extinct?

Someone from Colorado wrote to me and asked me about thylacine sightings. Many have been recorded, but sadly, none are confirmed. But that doesn't mean they couldn't be alive.

This video was taken in 1973. It's one of the three videos I have seen of a thylacine sighting. My opinion is it gives me some hope they could be alive.

What do you think? If you'd like to let me know, please post a comment.