By the way, here is the definition of empirical, so you'll stop, at least, mismatching its meaning which is kind of the opposite of using scientific theory... (Having studied ancient Greek and Latin helps a bit to understand etymology and the correct use of words)
Search results for 'Empirical':
empirical and empiric adj 1 based on experiment, observation or experience, rather than on theory. 2 regarding experiment and observation as more important than scientific law. empirically adverb by means of experiment rather than theory.
ETYMOLOGY: 16c: from Latin empiricus, from Greek empeiria experience.
The Chambers Dictionary (13th edition)