Two unrelated questions: Timer accuracy and loading screen start

Hey there, I was hoping someone could help me with two things

1. How accurate can timers get? Specifically, would there be a difference between .03 and .033? .033 and .0333, et cetera?

2. How does one make it so that after loading, there is no need to press any key?

1. Well it would be kind of hard to answer this, but usually time is measured in miliseconds so numbers with more than 3 decimals probably round up (0.0333=0.033). And I simply don't see where would you need it to be more accurate than that.
2. Make sure it has very little or no text at all. Optionally add this text to the loading screen picture instead.

Im fairly sure that timers are accurate down to the thousanths. (.000's)

i would also like to know how accurate timer is.
I wanna know if u can do timing under 0.03 seconds.
And if you can, how many decimals can u go to still with accuracy.
I want to use timing periode on 0.0001 seconds, is this possible?

Ive done triggers with .02 before, and it worked fine.

I know that .02 and .01 work fine, my question is would .021 be different from .022

Some people seem to be saying it would.

You could test it. Make 2 timers, one that expires in 10 seconds or w/e and then a repeating timer with the time you want to test. The repeating should increase an integer by 1. The 10 second timer should print the value of the integer. Test with different times, and see if there is a difference in the variable.