My Equation for the price of bitcoins. Please Give me your thoughts

[marty.lee]

After a little thinking while I was trapped in the n00b jail, I came up with this formula to calculate the exchange of USD to bitcoin based off a number of factors. NothinG made a good php script on his site to run my equation using all current data. Take a look at:
http://zombietoday.com/dev/pricecal.php
The Equation is: (b*r)/((c*(b/m*(a/e)))-d)
b = blocks
r = reward
c = control = 2500000
m = another control = 140000
a = avareage Time To Solve a Block in seconds with no decimals sense last difficulty change
e = expected time to solve a block = 600 = 10 mins
d = difficulty

The current price of bitcoins should be around: $8.87

Kind Regards,
Marty Lee

[marty.lee]

It's funny because now

(b*r)/((c*(b/m*(a/e)))-d)

says around $4, but it skyrocketed

heh

[grue]

how is this equation derived?

[Tuxavant]

This is great and all, but it has no variables for the human factors like optimism, fear, greed, risk, and personal financial conditions (to name a few).