the bittul torah answer covered how much learning a person owes and that normal life is not bittul torah. this asks the other side of it: what counts as torah in the first place.

the sources make the mitzvah sound total. “vehigisa bo yomam valaila” (yehoshua 1:8), and “vedibarta bam beshivtecha beveisecha uvelechtecha vaderech” (devarim 6:7), speak of torah at home and on the road, day and night. the rambam (hilchos talmud torah 1:8) obligates every jewish man, rich or poor, healthy or suffering, married with kids, to set times for torah day and night. and the mishnah (peah 1:1) ends “talmud torah keneged kulam.”

so what actually fills that:

1. does learning require a sefer, or does listening count. edge cases: a gemara shiur on headphones during a commute. a jewish history or hashkafa lecture. a podcast about self growth and middos from someone who is not a rabbi. an audiobook of chumash. a shiur at double speed half absorbed. which of these is talmud torah, which is something good but not the mitzvah, and which is neither?

2. does thinking torah count. no sefer open, working through a sugya in the head on a walk or in the shower. is hirhur the same mitzvah as learning out loud, or a lower tier? and does birkas hatorah in the morning cover a day of torah thoughts, which would suggest they count?

3. does a person have to sit learning. “beshivtecha beveisecha uvelechtecha vaderech” sounds like on the go counts too. is torah on the bus or at the gym the same mitzvah as the beis medrash, or is there something about sitting down with a text that headphones cannot replace?

4. and the biggest one: is torah a lens to see the world. if torah shapes how a person thinks about everything, money, people, work, is seeing the world through that lens itself talmud torah, or does the mitzvah only live in actual torah content? kiddushin 40b says study is great because it leads to action. does that mean the point is what torah does to a person, and if so, where is the line between torah and just thinking well?

bottom line: what is considered torah study, what only resembles it, and where exactly does the mitzvah of talmud torah begin and end?