Let us look at this in a slightly different perspective. Sure, indoors, outdoors, under proper conditions, lighting, schedules, etc., it is achievable to get a pound of dry out of one plant.

The time it takes to grow one that much, the space it takes, the increased lighting it takes for full penetration, makes it unreasonable to grow so large indoors UNLESS it is not a perpetual growth, even then the increased cost is (to me) not worth it.

Conversely, if you are doing this to have a grow and then to not have to bother for a period of time...like a 3 month vacation or something, well then it may be necessary to do this.

The perpetual garden is much more pleasant to deal with. No large amounts of plants to harvest and trim, dry, cure, and preserve and risk degradation of the medicine. This type of garden gives you a consistent fresh supply.

To each their own, but when someone starts talking pounds, it sounds like a commercial operation, if so, go away and stop making the rest of us look bad.