Interesting. As a thought experiment, what if I had run a sample size estimator beforehand and concluded that I needed 4,000 data points and estimated it would

Interesting. As a thought experiment, what if I had run a sample size estimator beforehand and concluded that I needed 4,000 data points and estimated it would take 6 days. In this alternate reality, I began the experiment on January 2 and ended it on January 8. Would that render the invalid experiment valid?