When making a plan, the demand side chooses their favorite plan, and the rest is often judged to be inferior. I think although there are many areas that need to be improved, there are still many options worth looking forward.
Recently, I looked through the mobile hard disk like the utility room and found that there were many alternatives to dust accumulation in the past working documents. If there was no accident, these schemes would certainly not have the chance to see the light of day again. It was still a pity. I just meddled in some of them and moved them out to dry them.