If there is a hole in the balloon, it will leak. If the balloon is intact, puncture a hole with a needle and the balloon will burst. Why are they all holes, but the results are different?
The pressure is different! With the hole, the pressure inside and outside the balloon is different! Suddenly pricking a hole with a needle, the balloon can't bear the sudden increase of atmospheric pressure, and of course it will explode!
If there is a hole, the pressure is the same from beginning to end! Of course there is no possibility of explosion!
Hee hee! You got it?