Henry: Back in my day there were still holes and notches in the Periodic Table.
Me: But aren't the notches just from how we think about things?
Me: Meaning that the "notch" in the s- and p-blocks are because hydrogen and helium don't really belong to either block?
Henry: That's bullshit. They certainly do belong with those other elements.
Me: OK. So the notches come from discontinuities. Hydrogen and helium are completely s in character--and so are lithium and beryllium.
Henry: So why is helium parked over the p-block?
Me: Exactly! It really shouldn't be there.
Henry: Bullshit. Helium is a noble gas. Of course it belongs there. Duh.
Henry looks at his cards and frowns.
Henry: I'll take two.
He discards two cards and I give him two more.