The main takeaways are mostly: - Linked lists defeat the out of order capabilities of the processor, and there's basically nothing you can do about it - The hardware is already optimized for iterating through arrays, so there's not really anything you can do to speed that up Review: 10/10 I learned a lot!!! The specific numbers aren't really relevant nowadays, but the approach he used to compare the throughput of different units, and how to measure, were really illustrative.