Because they might be jedis

Very interesting. Many dinosaur 'species' could be actually individuals of the same species at different ages.

The basic assumption is that extreme differences in sculls appear late in life, as in birds, instead of modern reptiles.

While the talk seems to go on for a while, the delivery makes it interesting throughout.

Here is a talk aimed at Westerners, trying to explain the chinese point of view for various issues.

Not sure how mainstream the ideas are but some are new to me.