Proof:

Go to Alegebra I, click on Functions (let this be "Functions Reference Page"). Click on 1st video on this page and note, on the page that opens, that when you're done with the videos and exercises on this page, and you go to click on the "Next Tutorial," it takes you to the very next in line video on the "Functions Reference Page." This exhibit of sequencing is what has been mostly the designed case throughout.

But too often, this...

Now go to Algebra I, click on Sequences (let this be the "Sequences Reference Page"). Click on the 1st video on this page and you end up on the moon. There is nothing at the bottom of any page hereafter ("Next Tutorial") that will take you back to the next video on the "Sequences Reference Page," by name or factally.

This kind of inability to organize intelligent sequencing is gaining infamy and notoriety. It KILLS learning outright. No plan. No proper training. Disheveled. Disorganized. Time-wasting. Don't need this.  Really stinks. You'd like to pto when you run into it.

If this guy Sal didn't happen to have the very best math education - that I have found - so far on this god-forsaken, Stanley Steamer net, I'm the kind of guy who wouldn't have batted an eye to pull out of his trashy "Harvard" and head right up to Yale with some new hope (and they better not get impish with me,  either, or I'll  do the same with them - pull all support , regis funds and funds the same.) When they're caught with these gargantuan blurbs, they're caught. Their high stated "educational creed" is literally gutted when you find this level of scum.

No, it's true; he's got the best so far; it's called a monopoly in the area.  Any new producers in the area -competition - out there in Enterprise?

Kindly pull your damned selves together in there.