The differences between firstborns and lastborns:
Alec, at 1, had been the sole subject of approximately 32,000 pictures.
Isaac, at 1, had been the sole subject of approximately a dozen pictures.
Alec, at 2, knew the word 'butt,' and also knew it was a word he was not allowed to say. So he didn't say it. Ever.
Isaac, at 2, loved to walk into the middle of a crowd and scream "BUTTCRACK!" because it got such an incomparable reaction.
Alec, at 3, was sometimes allowed to watch Disney/Pixar movies or educational PBS cartoons.
Isaac, at 3, could name every character on SpongeBob, and could independently find and use his favorite apps on my iPhone.
Alec, at 4, loved organic frozen blueberries, local whole-milk yogurt, and edamame.
Isaac, at 4, enjoyed those too, but was really fond of poorly spelled foods that come out of spray cans, such as Reddi-Whip and EZ-Cheez.