[bobbob1921]

I have always found the analogy all the grains of sand on the beaches of earth to be something that helps accurately convey large numbers to myself and others. Somethings I’ve always wondered about this analogy:

1 – at what depth are they referring to, i.e. if you’re at a beach and dig down two feet you’re still Coming in contact with sand (and grains of sand). Do these count also?

2 – if you wade out into the ocean and go underwater, there are also more grains of sand under the water (are these included?). (what about all the grains of sand on the various vast deserts around earth?)

For number two I would assume NO as the analogy says all the grains of sand on the earths beaches a beach.

[jajko]

As per parents numbers, its way way more than all the grains of sand anywhere on Earth.

[RajT88]

I started doing the math based on some assumptions, but this guy came up with 500 quadrillion grains:

https://science-atlas.com/faq/how-many-grains-of-sand-are-th...

Which is 5x10^17 versus 10^24.

Way more stars!