david marcelo


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david pinto ribot

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Christmas

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Happy Christmas for everybody.I call cost of opportunity the fact that doing something means to postpone other things, money, time etc.Interesting video.I would like give thanks in special to you Dean not only for your RE skills,you define like week wisdom to your videos but you really are a wise guy and you are capable of transmit your wisdom in a superior way,I can notice that you are a nice person and you really worry about people in special your students.
Thank you for to be there and blessings for you and family.
Happy New Year
David Pinto Ribot