below are a few examples of similies you can use.
Yes, the amount of knowledge a graduate has is important, but if he has no idea how to use that wealth of information, he is useless, like the limb of a corpse.
Yes, the amount of knowledge a graduate has is important, but if he has no idea how to use that wealth of information, he is useless, like a key to a lockless door.
Yes, the amount of knowledge a graduate has is important, but if he has no idea how to use that wealth of information, he is useless, like an unloaded gun.
Yes, the amount of knowledge a graduate has is important, but if he has no idea how to use that wealth of information, he is useless, like a car with without wheels (or gas, your choice).
Yes, the amount of knowledge a graduate has is important, but if he has no idea how to use that wealth of information, he is useless, like a crutch to a paraplegic.
Yes, the amount of knowledge a graduate has is important, but if he has no idea how to use that wealth of information, he is useless, like a broken alarm clock.
Yes, the amount of knowledge a graduate has is important, but if he has no idea how to use that wealth of information, he is useless, like deoderant to a hippie. (lol)
that's all i have for now. hope this helps.