Illusions

We wash our dishes and put them away in the cupboard. Later, we take them out and use them. We see them as clean dishes.

Inside your cupboards, however, there are most likely transients. Most certainly air-borne bacteria, but also spiders and all sorts of creepy crawlies making their way through. You only look at the dishes when you take them out, which accounts for the slightest fraction of time they are exposed and available, and you never get down on the floor, or climb up higher, or get in any other position to see the corners you never look at.

Your clean dishes are not clean.

Effectively it makes no difference, because your body is resilient, and you could eat the bugs whole and survive, their effect imperceptible.

Now imagine this is a metaphor for your daily life.