On top of an Emergency fund, I find taking money out for KNOWN expenses makes sense. Like putting aside money for car repair, basic home repairs, etc separate from emergency stuff.
I assume he meant known, yet undetermined, expenses, which is sensible. For instance, you know that your house and car are going to need repairs eventually, so it makes sense to have some money set aside for those rather than dipping into your "emergency fund" -- otherwise what happens if a real emergency occurs before you finish paying it off?
Once you have enough money in your savings, though, I think you can stop thinking in these terms.