My two cents, two best examples I can think of:
I have a friend who completed his BTech from Biotech, worked as Business Analyst for an IT company and then went to do MBA. Three different carrer paths ending with MBA.
With job offer not running into his "expected" 15+ lakhs. he really is confused what to do in his life.
Another of my friends did BTech in Electronics and Communications, worked as tester in an IT company, went on to do MBA from IIFM and now works in a commdity trading environement in South Africa. His commodity trading knowledge is nowhere near to one of other friends who is into trading.
Makes you wonder how did we get into this recession (major part of it has been attributed to CDS trading commodity traders. Traders who had no idea what they were doing. Their focus was more on making commissions),