People should differentiate what 3-4 scheme they're referring to. There is basically a Philips 3-4 and Parcells 3-4. Parcells and Bellichiks are 2 gap, Phillips is a lot more 1-gap. Seymour got 8 sacks playing a 2 gap D, which is a rarity.
The one we're evolving to is most likely the 2 gap variety like Parcells and Bellichiks.
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