Well if you go to the bank, try to get them to give you 100 dollars for 9999 cents [only legal tender if you go to a bank, in a shop they can and will likely refuse]. Now as we all know banks are the de facto mathemagicians ;>)

Interesting discussion. Not only Banks do the rounding but also our app_config.xml or app_info.xml files.
To set the number of GPU threads you want to run in parallel, you give a count number that is a fraction of 1. Example 1 means one GPU core. 0.5 means 2 GPU cores. Now if I want to have 12 GPU cores so as to have the same number of CPU cores that I have then the number for count should be 1/12 = 0.083333333333.......ad infinitum. Thanks god 0.083 is considered as 12 and not 12.048 which would mean to use 12 cores and a fraction of and additional 13th core. Just unamanageable.

I'm probably beating a dead horse, but if you're interested in mathematics, I think this is important. When you learn calculus, you learn about limits and one of the things you learn is what happens to a function f(x) as x approaches a certain value, often 0 or infinity.

One of the things that is rarely talked about however is what happens AT infinity and part of the reason is that it's largely irrelevant for the purpose of understanding and using calculus, however the idea of 'at infinity' does have meaning as I was trying to show in the previous example.

I'm not sure what you mean.

Here's another example. People think that the two aren't equivalent because you can somehow subtract .999.... from 1. In other words that there is something left over at the tail end of all of those nines.

But the whole point of an infinite series is that there is no end, so any "remainder" that you would be subtracting from one is swallowed up by infinity.

edit: is that what you meant by "null?"

I like that one, but you forgot the minus sign 10x - x = 9x implies 9x = 9 implies x = 1