That "90% memory used" number that made you order more RAM? It is almost certainly fine. Here is the metric that actually matters — and how to read it in under a minute.
Your Mac slows to a crawl mid-task, then quietly recovers. It is not random — it is thermal throttling. Here is what it is, how to spot it yourself, and how to catch it before it bites.
Your fans are screaming, the palmrest is warm, and Activity Monitor shows a wall of numbers — but nothing obviously wrong. Here is what is actually happening, how to read it, and why thermal throttling is doing exactly what it should.
Three copies of the same video scattered across Downloads, Desktop, and an old project folder. Which one is safe to delete? The challenge isn’t finding the duplicates — it’s not deleting the one that matters.