Albert Einstein used "Gedanken (Thought) experiments," or critical thinking questions, to develop his theory of relativity. Some ideas are best understood by experimenting with them in our own minds. The following critical thinking questions are designed to demand your full attention but require only a comfortable chair - no technology

• E-mail your e-mail address to me to be added to outlook for broadcast e-mails.
• 1st impressions e-mail what are your thoughts on the first class, and comments that might make the class more interesting.