What is the next letter in the following sequence? 
O T T F F S S

This is an anti-magic square where no lines, horizontal, vertical, or corner to corner, add up to 34.  By changing the position just four of the numbers, can you create a magic square so that each horizontal, vertical, and corner to corner line totals 34?

A man is alone on an island with no food and water and no form
of transportation, yet he does not fear for his safety. Why?

How many circles?