So, I spent one year working on this system and only wrote 300 lines of code in prolog and lisp language however, I improved massively my skills in logic programming and more important skills in finding the best solution rather than any solution. hint, timetable solution is a NP-Complete problem.
My dissertation's product compare to some other students was not something visual like a website or application which you could interact with, even I've been told by some classmates that "Hey, where is your codes, I wrote over 20,000 lines of code". Well, my product apart from some codes was few mathematics formulas in optimisation which rarely makes sense to anyone. I never thought one day I may use what I learnt unless I do PhD in this field, but I was wrong.
When I started to work at Car loan 4 U, I never thought my skills in logic programming and algorithm will be useful as the role was "application developer", but I noticed I am using my skills where I learnt them in my dissertation, when I approached to design the database, everything seem easy as I did similar task in my dissertation.
The thing I learnt from this experience was to never stop learning and try to extend my knowledge outside a narrow skill.