The archaic period saw the beginning of philosophical and scientific thinking in Greece, and the Greeks’ interaction with other cultures from Italy, Egypt, and the Near East in this period had a significant impact on their thought. In the archaic period, the boundaries between disciplines had not yet developed, and so the thinkers who were later identified as philosophers also engaged in practical pursuits: Andrea Nightingale describes them as “pragmatic and polymathic”. For instance, ancient traditions about Thales of Miletus, traditionally identified as the first philosopher, also show his skill in such diverse fields as astronomy, engineering, politics, agriculture, and commerce.
Source: Wikipedia