Dull blades can cause cuts because they are difficult to work with. More pressure must be used to cut with them. This can cause the knife to slip. Knives should be sharpened frequently. Use knives only for the special purpose for which they were meant.
Knives have their own specialties.
There are knives for chopping, peeling, de-boning, filleting , scaling, carving, cutting, opening oysters, and many other special jobs. The correct knife for the job is the safest knife for the job. Store knives separately from other utensils. Never leave knives in the sink or in the wash water. Someone might reach in and grab the knife unknowingly.