Question

How do you understand this in practical halakhic terms—that Torah study, the most important commandment, equal to all the others, and “you shall meditate on it day and night,” overrides all the commandments, really like the Haredim say, that every moment one is forbidden to stop learning Torah, that any interruption is “neglect of Torah study,” and it is a shame to waste time on science?
Is it really the ultimate purpose to learn Talmud (and Jewish law) all day long? What comes out of that? It is enough to know what the Torah wants and make sure to review it from time to time so as not to forget—but why more than that?