Also, you write the software for X minutes and run it for Y. If cost(X) < cost(Y) e.g. Because Y is very large for long running software, then higher performanc

Also, you write the software for X minutes and run it for Y. If cost(X) < cost(Y) e.g. Because Y is very large for long running software, then higher performance will save money. Of course it can be difficult to know when this will be true especially in advance... As a software user, is completely agree with you! I get frustrated by badly performing software so often I regularly wonder if I'd be happier doing something that relied less on shitty software.