Intermittent ignition problem

Sometimes nothing (NOTHING!) happens when I turn the key. Most often when this happens, it will start on the second or third try. A few times it didn’t start until about the 10th try.

It is VERY intermittent. It usuallly starts OK the first turn of the key. The dealer had it for a couple days for another issue; It always started for them.

Does this mean they’ll never be able to find out the problem until it just won’t start at all?