Answer:
A new technology is invented that allows for new experimentation.
Step-by-step explanation:
This should be the best situation because new technology helps scientists make more accurate and precise experiments, usually giving changes to the old experiments, and the discovery of newer parameters that could not have been found in the old experiment.
So new technology, more accurate and precise experiments, more parameters and conditions have been found, giving scientists a deeper understanding of what is happening, therefore giving a theory a high probability to change.