Present
Present progressive has "-ing", present emphatic requires the verb "do" or "does" and present perfect requires "is/has/have"
ARE U FILIPINO? KUYA OR ATE
Grammar, spelling, pronounciation and vocabulary.
The use of knowledge to solve problems or create new products is simply problem solving.
and yes, creating a new product is problem solving, because no matter what you create, it solves a problem that somebody, somewhere, needs help with.