If Biblical exegesis were anything like Sabermetrics, no one would think we are commanded to blow the shofar on Rosh Hashanah.
Well, to be precise, the Rabbinic community may continue to believe that we are commanded to blow a shofar on Rosh Hashanah; but Karaites would continue to be skeptical of any claim that such a commandment exists for Yom Teru’ah – the biblical name for what people call Rosh Hashanah.