Definition of "should" []

• Used to express obligation or duty: You should send her a note. (auxiliary-verb)
• Used to express probability or expectation: They should arrive at noon. (auxiliary-verb)
• Used to express conditionality or contingency: If she should fall, then so would I. (auxiliary-verb)
• Used to moderate the directness or bluntness of a statement: I should think he would like to go. (auxiliary-verb)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "I only put things on there that I choose to read, not books that someone thinks I should read, or books I've agreed to review, or books I *should* read if I knew what was good for me."
• "It seems to me that if we're asking what developers want or should want, then they, like most businesses, *should* want whatever gives them minimum risk and maximum profitability."
• "I should also point out that insanely high MPG *should* correlate to low emissions, which is important in high-density areas like urban downtowns and commuter freeways."