I (unlike most, I think) still today don't keep a lot of apps open. This is less about performance, and more some irrational OCD sense of comfort. And it doesn

I (unlike most, I think) still today don't keep a lot of apps open. This is less about performance, and more some irrational OCD sense of comfort. And it doesn't improve performance. I actually think the one thing that has improved performance-wise is concurrency. Our computers can now do many more things at once than before. But all of those things are slower, regardless of whether you're doing 50 or just 1.