Copyright can be a bit of a difficult issue to understand, which is why anything that helps explain the issues in a way that can be easily understood is good.
One topic that pops up now and then around the world is that of copyright term extension, with claims that it’s needed to foster creativity, and recoup costs.
Of course, at this stage, it’s nonsense, since if you can’t make your money back within 70+ years, you’re never going to, nor will it encourage any more creation.
Explaining it all is this video by C.G.P. Grey. It’ll be handy reference when the inevitable extension act comes around sometime near 2018, when copyrights are due to start expiring again, in the US.