Computer Science:
-----------------

College    Spend most of your time in a dimly lit lab, playing XTrek
 and drinking Jolt.  Interact only with other CS majors, and only via the
 'net if you can manage it.  Become passionately involved only in the
 continuing IBM/Commodore/Macintosh debate.

Real Life  Spend most of your time in a dimly lit office, playing
 Flight Simulator and drinking gourmet coffee...at least five cups an
 hour.  Interact only with your own project team, and then only via
 e-mail.  Become passionately involved in the continuing debate over who
 pays when the schedule slips, which wasn't your fault because you told
 them to take DOOM-playing into account from the beginning.

Psychology:
-----------

College    Spend most of your time in a dimly-lit lab, playing with
 rats and other vermin.  Drink Jolt by the six-pack to stay up all night
 with the rodents. Interact only with other Psychos, but only to analyze
 their behavior in non-lab situations. Become involved in the continuing
 debate over whether a trained rat could succeed as a comp sci major.

Real Life  Spend most of your time in an unemployment line and
 living in a cardboard box with other vermin, wishing you'd changed to CS
 instead of the rat. Continue to consider yourself superior to social work
 majors.

Economics:
----------

College    Spend most of your time in a brightly-lit room full of
 charts and graphs.  Learn about supply and demand, GNP, supply and
 demand, prime rates, supply and demand, inflation, and supply and demand.

Real Life  Spend most of your time in a brightly-lit government
 office with people who look just like you.  Issue reports you wrote in
 college because you're too lazy to write a new one.  Watch newscaster
 explain your report to unsuspecting viewers.  Listen to President explain
 that the economy sucks because of unemployed psychologists.

Philosophy:
-----------

College    Read books by dead guys.  Debate whether a tree falling
 alone in a forest will say, "Oh, No! Not again!"  Consider the ethical
 problems in the killing of annoying street mimes.  Get failed by prof for
 not liking correct dead guy.

Real Life  Spend most of your time in a dimly lit office, playing
 Flight Simulator and drinking gourmet coffee...at least five cups an
 hour.  Interact only with your own project team, and then only via 
 e-mail.  Become passionately involved in the continuing debate over who
 pays when the schedule slips, which wasn't your fault because you told
 them to take DOOM-playing into account from the beginning. Be thankful
 you switched to comp sci, which pays better than being a dead
 philosopher.

Math:
-----

College    Spend your time in a cramped office, thinking about
 polydimensional shapes and arguing their properties with other
 mathematicians.  Scream when they steal your work.  Steal their work.
 Be a social outcast.

Real Life  See above.  You work for the university.