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Yet , there can be serious gaps in the material covered from one textbook to the next ; close communication among instructors across levels is essential . For example , there can be a profile page for my personal physician who uses Google Co-op to indicate which websites he finds useful for his patients . While the focus of this career development program is on the conduct of patient-oriented research , there can be complementary basic research directly related to the patient-oriented research proposed in the application . Likewise , there can be a lag or lost data during periods of high market activity , as the broadcast bandwidth is limited . Until one thing comes out from the connection of things , there can be enjoyment , contemplation , but no thought .