There are two ways to extend a business. Take inventory of what you're good at and extend out from your skills. Or determine what your customers need and work backward even if it requires learning new skills. Kindle is an example of working backward.
Hackers are breaking the systems for profit. Before it was about intellectual curiosity and pursuit of knowledge and thrill and now hacking is big business.
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Even if the chef has a good business head his focus should be behind kitchen doors. A business partner should take care of everything in front of the kitchen doors.