Talk:Tyrannosaurus/@comment-151.229.227.92-20150717174315/@comment-28123829-20170818120730

The quotation of the paper on UCMP was published 9/6/17 so don't judge on whether the source is outdated just because it disagrees with a recent video. Videos are the most unreliable sources of info you can get as they often (but not always) go with the largest size estimates regardless (I have seen many videos that do this even on documentary channels) even Planet Dinosaur is riddled with errors that were known before it was even in filming stages (such as feathers on ceratopsians, Predator x's scientific name [it was published two months before filming ended so they had time to amend it] the size of some of the animals that appeared).

Just because a video states that Tyrannosaurus grew to 50 feet doesn't make it true regardless of the year it was made and how recent it is. It needs to be reliably sourced (I have seen this too often were a film crew for a documentary only use one source instead of cross-referencing sources [which is the most reliable sourcing method] or use a source biased to the position the editor wants for instance in Walking with Dinosaurs Episode one they feature Plateosaurus and Coelophysis living side by side as suggested by one palaeontologist [David Unwin], yet all other palaeontologists agree that they did not coexist in either time or place [there are fossils in North America that were once assigned to Plateosaurus but these have since been reassigned which David Unwin (and only him) disagrees with]).

Alternatively, the sight these videos appear on can be unreliable such as YouTube (on occasions I have known YouTube to be an unreliable source for videos on a certain subject). Therefore videos are an untrustworthy source of info unless you can see their sources and check that they are reliable and/or can cross-reference (can be quite hard to do sometimes as certain subjects have only a single paper on them [Tyrannosaurus's size is not one of them]). Also just stating that you have seen videos saying that they say that T. rex grew to 50 feet doesn't do anything to the other position it just makes you look like someone who may not know about reliable sourcing and/or makes it look like you haven't read any scientific papers and so trust only videos. I have seen videos that state that the Loch Ness Monster is real does this make it true? Of course not.