He went on to describe a case where two stones of different weights are tied together and allowed to fall. Thereby Galileo successfully argued against Aristotle in what became one of the most famous thought experiments. Since then thought experiments have appeared often in both scientific and philosophical arguments. This site is an attempt to collect some resources for studying them. Although the emphasis is on philosophical thought experiments, many of the materials included here relate to the field in general.
Participants can check back on results of puzzles run earlier in the year.