
423d611bd8dedd0a8c2c80e6905c68a0.ppt
- Количество слайдов: 51
How To Do Exactly the Right Thing at All Possible Times or thing No ____^ The Idea That Changed the World
E(u | p, X) = x X p(x)u(x)
E(u | p, X) = x X p(x)u(x) Expected Value = (Odds of Gain) X (Value of Gain)
If it comes up heads I’ll give you $10. Should you pay $4 to play? s! Ye Expected Value = (Odds of Gain) X (Value of Gain) 1/2 X $10 = $5
Errors in Odds Errors in Value Expected Value = (Odds of Gain) X (Value of Gain)
Errors in Odds Errors in Value Expected Value = (Odds of Gain) X (Value of Gain)
Errors in Odds Are there more dogs or pigs on leashes in Oxford?
Errors in Odds Are there more 4 -letter English words with R in the 3 rd or 1 st place? _ _ R _ R _ _ _ BARE, FORT, PARK. . . RING, RANG, RUNG. . .
Errors in Odds Cause Estimate Actual Tornado 564 90 Fireworks 160 6 Asthma 506 1886 Drowning 1684 7380 Per 200 million US residents per year
Errors in Odds Cause Estimate Tornado 564 Fireworks 160 Asthma 506 Drowning 1684 > > Per 200 million US residents per year Actual 90 6 1886 7380
Errors in Odds
Errors in Odds
Errors in Odds
Errors in Odds
Errors in Odds ? • 10 tickets • $1 to play • $20 if you win
Errors in Odds 1/10 X $20 = $2
Errors in Odds 1/10 X $20 = $2
Errors in Value Errors in Odds Errors in Value Expected Value = (Odds of Gain) X (Value of Gain) Is this Big Mac worth $25?
Errors in Value: Comparing with the Past COMPARING WITH the Past instead of the Possible
Errors in Value: Comparing with the Past $60 K in Year 1 $35 K in Year 1 50 $1 $40 K $50 K K 35 $1 $45 K $55 K K in Year 2 in Year 3
Errors in Value: Comparing with the Past A $2000 Hawaiian vacation package is on sale for $1600. Would you buy it?
Errors in Value: Comparing with the Past A $2000 Hawaiian vacation package is on sale for $700. You think it over for a week, and by the time you get to the ticket agency, the best fares are gone and the package will now cost you $1500. Would you buy it?
Errors in Value: Comparing with the Past $2000 $1600 $700 es Y No $1500
Errors in Value: Comparing with the Past You are on your way to theatre. In your wallet you have a ticket for which you paid $20, and a $20 bill. When you arrive at theatre you discover that you’ve somehow lost the ticket. Would you spend your remaining $20 on a ticket? No
Errors in Value: Comparing with the Past You are on your way to theatre. In your wallet you have two $20 bills. When you arrive at theatre you discover that you’ve somehow lost one of the bills. Would you spend your remaining $20 on a ticket? es Y
Errors in Value: Comparing with the Past The Lost Ticket X The Lost Money X
Errors in Value COMPARING WITH the Past instead of the Possible instead of the Past
Errors in Value: Comparing with the Possible
Errors in Value: Comparing with the Possible $8. 00 $27. 00 $33. 00
Errors in Value: Comparing with the Possible $8. 00 $27. 00 $33. 00 $51. 00
Errors in Value: Comparing with the Possible
Errors in Value: Comparing with the Possible You want to buy a car stereo. The dealer near your house sells it for $200, but if you drive across town, you can get it for $100. Would you drive to get 50% off (saving $100)? es Y
Errors in Value: Comparing with the Possible You want to buy a car with a stereo. The dealer near your house sells it for $31, 000, but if you drive across town, you can get it for $30, 900. Would you drive to get. 003% off (saving $100)? o N
Errors in Value: Comparing with the Possible
Errors in Value: Comparing with the Possible A B C D
Errors in Value: Comparing with the Possible TODAY TOMORROW NEXT WEEK NEXT YEAR
Errors in Value: Comparing with the Possible $60 NOW OR Problem #1 $50 NOW
Errors in Value: Comparing with the Possible • More is better than less $60 NOW Problem #1 $50 NOW
Errors in Value: Comparing with the Possible $60 NOW $60 OR Problem #2 In 1 month
Errors in Value: Comparing with the Possible • Now is better than later $60 NOW Problem #2 $60 In 1 month
Errors in Value: Comparing with the Possible Now is better than later $50 NOW BUT More is better than less $60 OR Problem #3 In 1 month
Errors in Value: Comparing with the Possible Now is better than later Impatience $50 NOW More is better than less Problem #3 $60 In 1 month
Errors in Value: Comparing with the Possible Now is better than later Impatience $50 NOW More is better than less $50 In 12 months $60 In 1 month $60 OR In 13 months
Errors in Value: Comparing with the Possible Now is better than later Impatience $50 NOW More is better than less $60 In 1 month $50 Patience $60 In 12 months In 13 months
Errors in Value: Comparing with the Possible Impatience Patience 30 Days
Errors in Value: Comparing with the Possible
Errors in Value: Comparing with the Possible Illusions of Spatial Perspective As seen from 1 ft 21 ft 2000 ft 2021 ft
Errors in Value: Comparing with the Possible Illusions of Spatial Perspective As seen from 1 ft 21 ft 2000 ft 2021 ft 20 Feet
Errors in Value: Comparing with the Possible Illusions of Temporal Perspective As seen from
Errors in Value: Comparing with the Possible Illusions of Temporal Perspective As seen from 30 Days
Conclusion If we’re so stupid, then how did we get to the moon?