#TBT: Necessary But Not Sufficient

Happy #TBT. To celebrate, we’re sharing an oldie-but-goodie post from Jim: Necessary But Not Sufficient. You need air to breathe, but it’s not enough to survive. You need to be big to play in the NFL, but you need a lot of other things, too. These are what’s known as ‘necessary, but not sufficient’ conditions. The Beatles sang that “All You Need Is Love,” which is obviously wrong, but it’s hard to blame them when “Love Is a Necessary But Not …

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