No, they are answering the question asked. The point you bring up is a valid follow on to the observation made in the query.  Essentially, the interchangeable use of terms simply exposes the "ignorance" of those that do so.  However, as can be seen from the answers there is very little chance of consequences due to poor thought processes or improper design protocols.  Those that actually perform the design know the difference and go through the jar testing and perform the pilot study.

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No, they are answering the question asked. The point you bring up is a valid follow on to the observation made in the query.  Essentially, the interchangeable use of terms simply exposes the "ignorance" of those that do so.  However, as can be seen from the answers there is very little chance of consequences due to poor thought processes or improper design protocols.  Those that actually perform the design know the difference and go through the jar testing and perform the pilot study.