Perhaps you could contact the company you want to work for via a throwaway email so that they don't see you and prejudge you as an "old guy"? If you can fix som

Perhaps you could contact the company you want to work for via a throwaway email so that they don't see you and prejudge you as an "old guy"? If you can fix someone's product and business model on a whiteboard, you should be able to use their product, find a flaw, and send them an incisive email about it.