Every bridge player develops an internal mental database of bridge hands over the years. Approximately how many hands of bridge have you played in your life so far? (Including rubber, social, Midnight Swiss, and hands you would rather just forget)
To make the calculations easier, here's some the rough guesstimates:
Duplicate Twice a month: 25 boards/session X 2 sessions/month X 12 months/year = 600/year
Twice a day Monday-Friday: 50 boards/day X 5 days/week X 50 weeks/year = 12,500/year
Three a day Wed- Monday: 75 boards/day X 6 days/wekk X 50 weeks/year = 22,500/year
if you start to play early enough and often enough it adds up to some big numbers. It surprises me how little I have learned in my first 120,000 hands.
Food for thought bonus question: Should I have bought a new car/house/island instead?
So far I have been happy with this little hobby.
Plus... it's free!