The document discusses probability and experiments with picking items from bags without replacement. It explains that probability is the likelihood of an event occurring, expressed as the number of favorable outcomes divided by the total possible outcomes. An example is given of picking colored cubes from a bag, and calculating the probability of picking each color. The document then describes an experiment of picking candy - Twix, Skittles, and Reese's - from a bag without replacing the items, and calculating the changing probabilities.