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carl_corderon Arrow's Theorem (2014)

This video really helped me to digest the concept. Thanks for sharing!

carl_corderon Resetting the Clock of Life

This reminds me of a passage from "Einstein's Dreams" by Alan Lightman. It's the difference between mechanical time & body time. You can read it here: http://members.iif.hu/visontay/ponticulus/britannicus/einste... (the 24 April 1905 entry).

carl_corderon A large slab of ice is breaking off an Antarctic glacier

Of course it floats. But that's not what I was trying to say. Go to your cup, put some ice in it and then mark the water level. Now let the ice melt and remark the water level. They will be at the same level.

carl_corderon A large slab of ice is breaking off an Antarctic glacier

I agree with Firebrand (^above) that if the ice is already floating (sea ice) and it melts it will cause no other immediate displacement of volume (even if a large part of that floating ice is above sea level and even if solid water takes up less space than liquid water). That's an application of Archimedes principle and can be explained here: http://physics.stackexchange.com/questions/110645/why-does-i.... Indeed it's land ice melting that causes sea level rise. However, sea ice melting still changes the albedo and does directly contribute to climate change.

carl_corderon Etherplay: Play Skill Games on Ethereum

I wanted to try playing the game (EtherSpace), so I added the MetaMask extension to Chrome. I noticed the account is initiliazed with 1.000 ETH on the Ropsten Test Network. However, the game requires you to play on the Main Ethereum Network for a price of 0.01467 ETH. Sadly, I have no ETH on this network.

carl_corderon Superformula

This is my take away:

PolarPlot[(Abs[Cos[2(t - Pi/2)/4]] + Abs[Sin[44(t - Pi/2)/4]])^(-1/(-0.2)), {t, 0, 2*Pi}, PlotRange -> {{-20, 20}, {-5, 32}}, PlotStyle -> Darker[Green, 0.2], PlotTheme -> "Marketing"]

carl_corderon How I Could Steal Money from Instagram, Google and Microsoft

I understand how these call would cost Instagram/Google/Microsoft money. But, could someone please explain why a call to a premium number "earns" the account holder money?

carl_corderon Can Topology Prevent Another Financial Crash?

Another interesting and related topic are Ramsey numbers. R(3,3)=6 which means:

"In any party of six people either at least three of them are (pairwise) mutual strangers or at least three of them are (pairwise) mutual acquaintances"

https://en.wikipedia.org/wiki/Theorem_on_friends_and_strange...