Very insightful. Thank you for taking time to post your observations. Balancing seated on a large exercise ball is not like balancing on a floor full of marbles. One is no harder than the other but they require different skill and practice.

It has been said the only constant is change. To deceive oneself that things are the same today as they were yesterday and will be tomorrow is to be in a dream. My hope is to wake up from that dream on a daily basis