yes

This is an artifact of the notation system being used (base 10).

There’s no difference between the object 0.999… and 1. They’re two ways of writing the same thing.

If I have a cake and I divided it to 3 pieces, if 1/3 is .333 and 3 pieces equals .999, where is the .001?

It’s on the knife you used to cut with.

For wood working yes.

For a space launch maybe no?

.999… = 1

?

Infinity numbers are weird. .9999… is 1 as long as there is no end. Same as 0.000… is 0 as long as there is no 1 appearing. 1-0.999… is 0.