This week's book giveaway is in the General Computing forum. We're giving away four copies of Arduino in Action and have Martin Evans, Joshua Noble, and Jordan Hochenbaum on-line! See this thread for details.
Something analogous to E * I = S.
Where E is effort, I is intelligence directing the effort, and S is success in conditions where the probability of success is greater than zero and where the odds are can be improved by increasing the number of times effort actions can be taken. Included in the concept of E is both time and quantity of efforts. So given infinite time or infinite efforts in a limited amount of time, success is certain. More realistically, feedback loops to intelligently learn from prior efforts should reduce the time/effort amounts needed to something less than infinity.