Some new-product experts maintain that getting close to customers through intensive research is the only way to develop successful new products. other experts disagree and say customers can't possibly provide useful feedback on what they don't know and can't provide insights that will lead to break through products..

either defend the proposition that consumer research is critical to new-product development, or the position that consumer research may not be all that in new-product development.

Some disadvantages to leasing a car is that you are counting on someone to give you money every week or month depending on what you decided and if they don't have all of it well what if you needed that money now you as well have to pay not in full. a disadvantages to purchasing a new vehicle is if it is used then not all the time will absolutely everything work. its almost like a trail and era. although if it is a new car they will try to though all these specials and deals at you in your lease and it can be very overwhelming if you are not use to it.   

Its stage conventional