Laboratory / Computing
Algorithms and cost
Trace linear and binary search over increasingly large collections. Count comparisons rather than milliseconds, then plot how those counts change when input size doubles.
What changed
At input setting 55, the linear route grows with every item while the halving route grows with the number of times the input can be divided by two.
Return to the route
Experiment after prediction.
Before changing a control, say which visible feature should move and which should remain invariant. That prediction is the useful part of the experiment; motion alone is not evidence.