Life is laid out like a math problem for you on monday, and you spend the day trying to determine which are the relevant variables. This calculating mindset cuts through everything else and will be helpful on tuesday and wednesday as well during a deep, intelligent dialogue with your most brilliant friend (as many insights as you have, preaching is not going to work). On thursday and friday, your interactions are more difficult than usual, especially those related to business. On saturday and sunday, you are submerged in big ideas.