The essence of lab experiments

Since it's impossible to have every experiment sucessful, I start to think the most important part of doing experiments is debuging. Starting with reading your lab notes and contemplating the possible problem, listing it all out, and then designing methods to tackle the problem. Then you execute your plan, obtain your results and do more brain storming, determining if you've found the answer or plan your next move if not. It most've been those chalenges and brain storming that make doing lab work truly exciting. No wonder experiment classes with predesigened protocols always seem more dull then nessesary.