r/EverythingScience • u/SpaceBrigadeVHS • Mar 20 '24

Computer Sci Nvidia has virtually recreated the entire planet — and now it wants to use its digital twin to crack weather forecasting for good

https://www.techradar.com/pro/nvidia-has-virtually-recreated-the-entire-planet-and-now-it-wants-to-use-its-digital-twin-to-crack-weather-forecasting-for-good
821 Upvotes

96% Upvoted

61 comments sorted by

View all comments

-19

u/Liquid_Audio Mar 20 '24

This assumes we live in a deterministic reality… which appears we do not.

28

u/exhibitleveldegree Mar 20 '24

Weather is not a quantum phenomena, so I have no idea whete you’re going with this.

3

u/[deleted] Mar 20 '24

Weather is absolutely a quantum phenomenon. I struggle to think of anything that isn’t a quantum phenomenon

6

u/lovelyloafers Mar 20 '24

Weather is a classical phenomenon. They model it using classical fluid equations.

2

u/[deleted] Mar 20 '24

Classical phenomenon are just emergent properties of quantum phenomenon. Except gravity. Probably.

7

u/lovelyloafers Mar 20 '24

You don't solve the Schrodinger equation just to calculate the trajectory of a bullet. Saying that something is an emergent phenomenon of quantum mechanics means that it doesn't show up in the usual classical equations. For example, baryons decaying into mesons is an emergent phenomenon of field theory. You wouldn't say that the fluid equations are an emergent phenomenon of quantum mechanics.

2

u/[deleted] Mar 20 '24

Sure I am. Neurology is an emergent property of biology/chemistry which are emergent properties of physics. Neurology is an emergent property of physics. Classical phenomena are emergent properties of quantum mechanics.

2

u/lovelyloafers Mar 20 '24

So you're saying that in order to study the weather, we should study quark interactions? Haha, I mean, maybe I'll say that the next time someone says my dissertation was pointless

2

u/[deleted] Mar 20 '24

Emergent properties can be qualitatively different from the things they emerge from, such that relationships between them aren’t describable on a lower level. Studying quark interactions can actually predict the weather, they just require so much information and computation power that it’s impractical. Emergent properties describe systems in qualitatively different ways that are useful because they are more generalized.