Final answer:
Indulging in speculation is not part of good science, which relies on proposing theories, developing testable hypotheses, making observations, and designing experiments.
Step-by-step explanation:
The activity that is not a part of good science is indulging in speculation. Good science includes proposing theories, developing hypotheses, making quantitative observations, and designing experiments to test these hypotheses.
Scientific inquiry is grounded in objective, testable evidence. While speculation can play a role in the formation of hypotheses, it doesn't directly contribute to the empirical evidence required for scientific investigation. A hypothesis must be falsifiable, meaning it can be proven false through experimentation, and also must be based on observations.
For science to progress, it's important that every step of the scientific method is rigorously followed. Speculation does not provide the measurable, empirical evidence that is essential for a hypothesis to be tested and validated.