No, he's asserting that they're aware that's a problem and that they need to be careful of it. Some succeed, some fail. Rather like using pointers, in most wa

No, he's asserting that they're aware that's a problem and that they need to be careful of it. Some succeed, some fail. Rather like using pointers, in most ways, which can also cause some pretty unmaintainable messes, but don't if you're really, really careful :-)