I have a genetic defect which renders me incapable of seeing dirt. Scientists call this gene mutation the "Y-chromosome."
This is usually not a problem. However, each year when it is time to vacuum the floors and carpets, I can't tell which parts of the floor or carpet have already been vacuumed and which haven't. This can lead to misunderstandings of a domestic character. But I have solved this problem, and am willing to share the solution with others who may be suffering from a similar genetic deformity.
Step 1. Get everyone who is not you out of the house for one hour. If the internet is working, make that an hour and twenty minutes.
Step 2. Access the hole puncher and take out all the holes that have been punched over the last 12 months. If there are not enough holes, punch some more.
Step 3. Spread the hole-punch holes uniformly over the carpet to be vacuumed.
Step 4. Vacuum up all the hole-punch holes.
Voila! Every individual carpet fiber has now been vacuumed and the other humans in your domestic situation will have no grounds for their complaints and accusations. Moral superiority is now yours for the next forty-three seconds. Revel in it!