Gilmoy: <tonsillolith: ... moving each piece a minimal number of times before all pieces have been developed.> Flexibly adjust to dogpile on your opponent's momentary weaknesses. Black has wasted four tempi himself: <4..Qd8 10..Qc8 11..Rd8> dubious plan <14..Re8>. After that, both sides have moved six pieces, but White's six have far more oomph and 5/8 of the board's vertical space.
More to the point, as of <11..Rd8> White's eye is instantly drawn to the smiting Nxf7. (If yours wasn't, study this game and about ten more like it -- that's what he did in his youth. Alternatively, lose <once> to that sac, and you'll never forget it again :)
So now he replans to see if he can make that work. And indeed, his next three moves <12.Re1 13.Bg5 14.Qe2> are exactly the prep he needs. Bonus: these are very good developing moves regardless, so even if Black defended perfectly, White would still have a good middlegame.
This is a fringe benefit of planting an Ne5. Admittedly, it's (very) rare that you actually get to ram home the Nxf7 sac. But that means that its true effect is to restrict Black's Rf8. Which, in turn, becomes a land mine buried along the Qc8-Rd8 plan: Black <must> resolve the center before White doubles on e6.
Ultimately, it suggests that Qc8-Rd8 is unsound. But heck, we knew that.