I don't have Netflix, so can't comment on Graham Hancocks' theories. Though I might suggest that if he'd taken the idea to the BBC, it might have got a fairer hearing. Netflix is not somewhere you take a notion if you wish it to be taken seriously!

As to the list of things 'Science' refuses to take seriously, all of them run into the same barrier in terms of the scientific method. Experiments must be repeatable and must always give the same result when carried out in the same way, regardless of who carries them out. There's an experiment almost everyone my age who did chamistry as senior school will have done. You mix hydrochloric acid and sodium hydroxide until the mixture shows a neutral PH. You then boil the mixture, This produces water vapour which disperses and leaves you with a crucible containing common salt - sodium chloride. This rule of acid+base=salt+water can be proved and reproved endlessly, even when the experiment is performed by ham-fisted, bored schoolboys on a Monday morning in February!

To say that a certain phenomenon has occurred, no matter how many times, is one thing. But the constant failure of psykers, mediums and others to produce consistent results under controlled conditions places an immovable barrier against their acceptance by physical scientists whose concern is primarily the investigation of the material Universe and its laws in order to best utilise them for our material benefit.

If those who are looking for these ideas to be accepted continue to badger physicists, chemists and biologists for admittance, they will continue to be ignored. Go talk to the sociologists and psychologists - they may be more prepared to listen.