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Really don't want to be dismissive, but this guy appears to me as having one gesture (both hands towards the viewer, to underscore the graveness of his words),

Really don't want to be dismissive, but this guy appears to me as having one gesture (both hands towards the viewer, to underscore the graveness of his words), a good haircut and that's about it. If find it hard to take a presentation like this serious. Most of the mentioned facts are right as far as i can judge it without having a major in physics, but to me this is so very much worse than a link to backreaction (Sabine Hossenfelder), startswithabang (Ethan Siegel) or almost any other serious physics blog out there as anything else. I suppose this will get downvoted, and I'm fine with that, but please explain to me why a self-promoting video guy with probably 5% understanding of the matter compared to a serious pop-sci blog is so relevant to you. Heck, even wikipedia has more information than this clip. And it doesn't cost 13 minutes + ads, just 5 minutes to read. It's not a paradox a neutron star gets smaller the more mass you add to it. This is also true for Jupiter-sized objects; it is a function of density, matter and gravity, and not related (in this case) to special relativity.

nynx 5y ago
Matt O'Dowd is a well-known physicist. I'm not sure why you feel that you can judge him so quickly.
ramraj07 5y ago
I have no idea what you’re talking about? It’s a pbs YouTube channel, the host is a professor in astrophysics and has generally made sure he doesn’t oversimplify anything. I like Sabine’s videos sometimes when she’s not bonkers kookoo but this guys not trying to be controversial.
gizmo686 5y ago
That self-promoting video guy is an astrophysicist, with a significant amount of papers published about black holes. You are free to not like his mass-market material, but from a technical level, he is quite qualified to talk about the subject. https://en.wikipedia.org/wiki/Matt_O%27Dowd_(astrophysicist) https://en.wikipedia.org/wiki/Matt_O%27Dowd_(astrophysicist) https://www.mattodowd.space/ https://www.mattodowd.space/ https://ui.adsabs.harvard.edu/search/p_=0&q=author%3A%22O'Dowd%2C%20M.%20J.%22&sort=date%20desc%2C%20bibcode%20desc https://ui.adsabs.harvard.edu/search/p_=0&q=author%3A%22O'Do...
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LASR 5y ago
Lots of assumptions in your comment. They happen to be very wrong. Maybe as a default position, you should assume less about someone’s credentials based on hand gestures and haircuts.
prawn 5y ago
This could be one of the greatest own-goal posts on HN I can recall reading.

nynx 5y ago

Matt O'Dowd is a well-known physicist. I'm not sure why you feel that you can judge him so quickly.

ramraj07 5y ago

I have no idea what you’re talking about? It’s a pbs YouTube channel, the host is a professor in astrophysics and has generally made sure he doesn’t oversimplify anything. I like Sabine’s videos sometimes when she’s not bonkers kookoo but this guys not trying to be controversial.

gizmo686 5y ago

That self-promoting video guy is an astrophysicist, with a significant amount of papers published about black holes. You are free to not like his mass-market material, but from a technical level, he is quite qualified to talk about the subject. https://en.wikipedia.org/wiki/Matt_O%27Dowd_(astrophysicist) https://en.wikipedia.org/wiki/Matt_O%27Dowd_(astrophysicist) https://www.mattodowd.space/ https://www.mattodowd.space/ https://ui.adsabs.harvard.edu/search/p_=0&q=author%3A%22O'Dowd%2C%20M.%20J.%22&sort=date%20desc%2C%20bibcode%20desc https://ui.adsabs.harvard.edu/search/p_=0&q=author%3A%22O'Do...

deleted 5y ago
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LASR 5y ago

Lots of assumptions in your comment. They happen to be very wrong. Maybe as a default position, you should assume less about someone’s credentials based on hand gestures and haircuts.

prawn 5y ago

This could be one of the greatest own-goal posts on HN I can recall reading.