If you rephrase that complex theory in simpler terms, it's just common sense.

This apple contains poison.

This letter will be relayed.

This train is a direct service to Ye.

His character affects all the people he is involved with.

Could you understand that point?

Hypervitaminosis occurs when the intake of vitamins is too high.

This software is a pirated version, so using it is illegal.

Osamu is sleeping and snoring.

You should protect your own health.