We all make those little mistakes but thanks to modern technology, it has been easier to mend errors with just a touch of a button or a click of a mouse. Misspelled a word while typing? Just hit backspace if auto-correct hasn’t fixed it already! We almost always have the chance to mend mistakes with very little effort.
However, what if the error is much more permanent, say like a construction job? Well, we can guess they probably caused tons of headaches to the builder and the owner. With things like elevators, stairs, windows, and doors, mistakes would be too costly to fix, so some people just opt to leave them as they are.