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# The Halfbankery

Fiscal Fun
 (+3, -3) [vote for, against]

Each deposit you make to your bank account is randomly either halved or doubled. Same for each withdrawal.

Correction (tip o' the hat to Wrongfellow):

Each deposit you make to your bank account is randomly either halved or multiplied by three halves. Same for each withdrawal.

 — sqeaketh the wheel, May 16 2011

 so you receive the amount you ask for but your account shows either half or twice the amount?

if your account is with a supermarket - your total shopping bill could be halved or doubled as well. oh, don't financiers have fun!
 — po, May 16 2011

 [sqeak], do all the other depositors get to make comments on your deposits?

Uh, wait a minute... this is not a sperm bank, right?
 — Grogster, May 16 2011

You can easily recreate this idea at the roulette wheel, or by finding a bookee willing to take bets on flipping a coin.
 — zen_tom, May 16 2011

 So if you deposit say £100, your accounts gets credited by either £50 or £200.

 That is, either you lose £50, or you gain £100.

 If it's a random 50/50 probability then it's worth your while to just keep depositing endlessly. The probability would have to be 66/33 to make things even out.

(Of course you'll have to alter the currency symbol appropriately depending which country you're in.)
 — Wrongfellow, May 16 2011

what zen-tom said. as luck would have it, you'd end up losing by halves ***yes, my bank is half full***
 — dentworth, May 16 2011

 [Wrongfellow] is right. (As I realized after posting this.) [+] for that. Corrected posting:

Each deposit you make to your bank account is randomly either halved or increased by three halves. Same for each withdrawal.
 — sqeaketh the wheel, May 16 2011

Or there's the option that random is not neccesarily 50/50. You can set the software to double 1/3 the time and halve 2/3 the time.
 — MechE, May 16 2011

 //either halved or increased by three halves//

 So now you either lose £50, or gain £150.

To make it balance out with a 50% probability, you need to either lose £50 or gain £50 - that is, your deposit is either halved, or increased by 50% (3/2).
 — Wrongfellow, May 16 2011

[Wrong] is right again. See corrected posting above.
 — sqeaketh the wheel, May 16 2011

wrong is right again. Something tagline-ish about that.
 — RayfordSteele, May 17 2011

When I saw the title I thought it would be an idea for a bank where you could deposit theoritical money. I was pretty enthused by that notion until I realized we already have one of those: the United States Treasury.
 — Alterother, May 19 2011

Isn't this just a re-naming scheme for investment banking?
 — DrBob, May 20 2011

No.
 — sqeaketh the wheel, May 26 2011

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