The word smṛti comes from the Sanskrit root smṛ means to remember. That sounds almost too simple for a category the tradition considered one of its most foundational, but the precision is deliberate. The tradition was drawing a line between two fundamentally different kinds of knowledge, and the difference turned on a single question: where did this come from? Śruti (the Vedas and Upaniṣads) was not composed. The ṛṣis associated with those texts are called dṛṣṭas, receivers. They perceived something that was already there. Apauruṣeya means not of human authorship, not belonging to any individual, not produced by any human mind. If you have read my earlier piece on Śruti, you will understand why the tradition held this as a foundational epistemological claim, not a religious one. Smṛti is pauruṣeya, it is of human origin. It is what deeply realized human beings, fully steeped in Śruti, then composed in their own language, in their own time, for the people of their age. How much you can trust a Smṛti text depends entirely on how deeply it is rooted in the Śruti it draws from not the reputation of the person who wrote it, not its age, but that connection to the source. This distinction is not philosophical background. It determines how much weight you give a text, what you do when two teachings conflict, and how you hold everything that has been handed to you.
What Smṛti includes
The category is considerably larger than most practitioners realize, and it helps to understand why before looking at what falls inside it. The Vedas are an extraordinarily precise body of knowledge transmitted orally, in specific sounds, specific meters, specific sequences that could not be allowed to drift even slightly across generations. To transmit something like that faithfully over thousands of years, you need supporting sciences; grammar so the language stays exact, phonetics so the sounds stay correct, etymology so the meanings do not get lost, a calendar so the rituals tied to the Vedas happen at the right time, and procedures so they are performed correctly.
