[Blasterlord2]

Everything is built one on top of the other.

But you seem to be telling me that if you knew how to work on a HP 3000 mainframe using Fortran and Cobol, you are good for today's 5G.

Stop talking nonsense.

PS:  Same goes for medicine, fyi.  A doctor who graduated 30 years ago cannot be very good if he does not continue to update his knowledge based on new discoveries.  Don't come and tell me that current medicine is based on old medicine...

That's only your deduction that this is my message.

I'm saying that you acquire a good foundation, then you become better as you continue in your job. Mr Ang by suggesting to have a expiry date for degrees, is saying that past knowledge is no longer relevant. 

You have a bad habit of assuming things.