A more thorough explanation:

Implied actual knowledge is a legal term that refers to knowledge that a person should have had based on the circumstances, even if they did not have direct knowledge of it. It is different from constructive knowledge, which is knowledge that a person would have had if they had exercised reasonable care or diligence.

For example, if a company's CEO is aware of a problem with a product, but does not tell anyone else in the company, the other employees may still be held responsible for the problem if they should have known about it based on their position in the company. This is because they had implied actual knowledge of the problem.

Another example is if a person sees a wet floor in a store, but does not put up a warning sign. If someone slips and falls on the wet floor, the person who saw the floor may be held responsible because they had implied actual knowledge of the danger.