To optimize a design usually means to build it within stress limits that will allow it function as it was designed, without going overboard. We usually go overboard. We’re not interested in products that are built so flimsy that failure is an expected bi-product of use. Everything has a failure point but we try to make our products stronger than expected and well, a little “abuse proof.”
With multiple prototypes we’re able to distinguish between optimal functioning and part failure. Sometimes a design can look great, function great, but not stand up to the abuse it’s sure to see in the environment it’s expected to perform in. We take all this into consideration when developing our products and you should expect nothing less.