My first "real" job was as an Assistant Professor in the Department of Mathematics at Smith College. My Ph.D. in Mathematics from Case Institute of Technology was completed by the end of my first year at Smith. I had left behind my amateur high school career as a French Horn player. I didn't have the time or inclination to continue as a spare time, not so good, player. Music remained a passion, but it was not how I elected to earn a living.
From Smith I went to York University where I was the first Chair of the new Computer Science Department. By 1980 I had been professing widely on how computers ought to be used. It was time to find out if what I professed made sense in the real world. I became a consultant. I remaind a management and systems consultant for most of my working life, interrupting that consulting work only to become the Director of the (new) e-Technology Institute at Seneca College.
When the e-business bubble burst early in the current century, Seneca no longer felt a need for an e-Technology Institute. I returned to the world of consulting. There I remained until I turned 70 (in 2009). I'm now well into my 3rd Age, ... I no longer search for new sources of income and I remain reasonably fit, physically and mentally. Offering courses as a volunteer through The LIFE Institute makes sense.
Thus far I've offered a variety of courses, from music, to urban planning, to philosophy/psychology. Interestingly, I've never taken a course in music or urban planning or philosophy or psychology. For me, one of the best and most enjoyable ways to learn new material is to teach it. That's what happened with computer science early in my career. It's what's happening now for me at The LIFE Institute.