Some problems can be theoretically solved (we can describe an algorithm solving the problem), but need too many resources to be practicably solvable CS 221 – Spring 2008/09 – Dr. CS 221 – Spring 2008/09 – Dr. How long does a specific algorithms take? On the concrete implementation on the programming language on the computer architecture on the computer power on other processes that might run on the computer Results are quickly outdated! Do we, thus, have no answer?