Why Momentum Really Works
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2026-07-23 09:44:50
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Text Highlight2026-07-23 13:05:50
Original Highlight Excerpt
"With barely a modicum of extra effort, we have essentially square rooted the condition number!"
Whisper Note
Wait, so it's like a free speedup? Why didn't they teach this in class?
Text Highlight2026-07-23 12:56:50
Original Highlight Excerpt
"With barely a modicum of extra effort, we have essentially square rooted the condition number!"
Whisper Note
So basically just crank beta to 1 and hope for the best, haha.
Text Highlight2026-07-23 10:02:50
Original Highlight Excerpt
"Momentum is a heavy ball rolling down the same hill."
Whisper Note
I've seen that image before, still helps me explain it to my students.
Text Highlight2026-07-23 09:53:50
Original Highlight Excerpt
"Momentum is a heavy ball rolling down the same hill."
Whisper Note
Heavy ball also overshoots, which is why we tune the friction.
Text Highlight2026-07-23 09:44:50
Original Highlight Excerpt
"Momentum is a heavy ball rolling down the same hill."
Whisper Note
Kinda poetic but that ball analogy breaks when you hit a flat region.
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