This draft confuses the usual, explicit definition of functions with algorithmic definitions. For example, the function on the real plane that takes (a,b) and returns 1 when a< b or returns 0 otherwise, where < is a well-ordering on the reals given by the axiom of choice, is certainly not algorithmic.
An average full-grown male Labrador Retriever weighs anywhere between 65 and 80 lbs. Males are characteristically larger than females, though are just as prone to becoming overweight. The average female Labrador Retriever can weigh from 55 to 70 lbs, depending on bone structure and diet.
1 Labrador Retrievers were bred for physically demanding jobs, and they have the high energy that goes along with being a working breed. 2  They need at least 30 to 60 minutes of exercise a day. 3  Without it, they can vent their pent-up energy in destructive ways, such as barking and chewing.