Is it possible to build an indestructible machine?

Mr. John explores the difficulties with creating something invincible and what the logical solutions would be. It may seem like a useless thought experiment, but it also has some important implications for our world as we know it.

Can you figure out why this matters? And can you figure out a different solution?

P.S. this isn't the end of the indestructible machine. I will try to post the advanced guide at some point (can't guarantee it will include animation. The art may be terrible, but it still took a lot of work).