However, since we've no time for careful experiments, I advise you to at least step back.

However, careful experiments with proper tools must be carried out to validate the explanation.

But careful experiments are usually better at picking up risk, too.

"It's beautiful they've started doing careful experiments of crumpling."

Well, we don't have time for any careful experiments, do we?

He suggested that the matter might be investigated by "careful cultural experiments".

Several other careful experiments looking for helium had been done but nothing was found.

The real mark of science is then to begin controlled careful experiments that test your belief.

If this is done as a careful experiment involving a limited number of mothers and schools, it is worth trying.

Robert Boyle taught that theories must be supported by careful experiments.