Though he is glorified by modern science advocates, Galileo was wrong about a lot of things - for example, when his calculation that the tides only happened once a day and was at the same time was criticized, he launched into vitriolic attacks on both Kepler and math, though they both were clearly right and Galileo was clearly wrong, as every illiterate sailor knew.
For $27 Galileo could have been shown the errors of his ways. That is what Rachel MacTavish, a graduate student in the Department of Biology at Georgia Southern University, spent on buckets from a hardware store, aquarium tubing, and pumps in order to be able to replicate the tide.