I believe that there is a bit of confusion when it comes to Maths/Engineering/Physics/Finance PhDs and the kind of work that they do.
The vast majority of Quants develop, implement (i.e. code), validate, calibrate, and maintain pricing, risk, and hedging models for derivatives, sometimes rather complex derivatives - the sort of shit that make s you go grey prematurely. Have a look at some of the job adverts on Quant websites, and you'll see what the requirements are.
Yes, there are Quants working on algorithmic trading, but a lot of the work done here is to reduce execution risk and market impact of trading strategies (i.e. for crude examples - VWAP or TWAP transactions of huge orders, etc, etc).
Of course, there are also bots making markets and an increasing number of Quants working on fully automated trading.
Also, think about the capital these guys are playing with, they don't exactly play with tiny half-a-mil accounts!!!
In addition however, they have better hardware, better connections to the exchanges, better software/algorithms, and pitiful transaction costs compared to you and I.
IMHO, traditional traders are not being phased out, but they have had to adapt. Of course, you've probably read of IBs firing huge numbers of, particularly, equities traders...
I trade traditionally (for fun) and I autotrade SIFs. Equities, well... Markowitz would be proud
Look, chill out and do as I do - just drink some Jim Beam, relax, totally groove-out to some cool tunes and trade!
[Edit] I wonder if these "black boxes" (I really luuurve that term

) are made from the same highly visible material their aircraft counterparts are made.
