Good Enough? Sometimes...
I've heard the mantra that Good is the enemy of Great. In general, I agree with Seth's relentless pursuit of better. But, every once in a while its nice to know that some things can remain constant. It is nice to have everyone agree on screws. It is a pain to try to figure out if the bolt on my 35 year-old VW is a metric or not. That being said...I still don't understand how slot screws have continued to survive. In their case, I'm not even sure they are 'good enough'.
Perhaps 'good enough' is not the issue, but rather it's what we are used to. Is it fear of change??