Rav Hisda taught that one should use mnemonic devices to learn the Torah. And the Gemara taught that this agrees with Abdimi bar Hama bar Dosa, who interpreted to mean that if it were "in heaven," one would have to go up after it, and if it were "beyond the sea," one would have to go overseas after it. Rather, people can learn the Torah using the tools that they find where they are. Rava (or some say Rabbi Johanan) interpreted "it is not in heaven" to mean that the Torah is not to be found among those who believe that their insight towers as high as the heavens. And Rava interpreted "neither is it beyond the sea" to mean that it is not to be found among those whose self-esteem expands as the sea. Rabbi Johanan (or some say Rava) interpreted "it is not in heaven" to mean that the Torah is not to be found among the arrogant. And Rabbi Johanan interpreted "neither is it beyond the sea" to mean that it is not to be found among traveling merchants and business people.