In this video Alan describes how the concepts in theories of physics can be automatically changed to accommodate conflicting experimental observations.
- We are interested in how failures of reasoning can lead to conceptual change.
- For instance, in Physics, new concepts may need to be introduced to modify a theory that is in conflict with experimental evidence.
- We hypothesise that a wide range of theory revisions follow a few common patterns.
- We have implemented these ideas in our GALILEO system: Guided Analysis of Logical Inconsistencies Leads to Evolved Ontologies.
- One such pattern we call Where’s My Stuff. It is triggered when an attribute of some stuff is predicted to have one value but observed to have another. The revision is to replace one concept by three: stuff is replaced by visible stuff, invisible stuff and total stuff.
- We see this pattern, for instance, in such diverse examples as the discovery of latent heat, the discovery of dark matter and some of the explanations for faster than light neutrinos.
- The new concept of dark matter, for instance, was introduced to explain the anomalous orbital velocities of stars in spiral galaxies. Newtonian mechanics predicts a lower velocity for some stars than their observed velocities. Introducing a halo of invisible dark matter around the galaxy brings the theory back into line with the experiment.
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