This is not an error of duplication. The full-fledged version of this Mitzvah are many and change for those who are learning the one/three chapter a day. The Message for the day from "Bringing Heaven Down to Earth" at the end of this Mitzvah is different than that of yesterday.

Positive Mitzvah 19: Grace after Meals
Deuteronomy 8:10 "When you have eaten and are satisfied then you must bless G-d"

"Thanks for the apples. What do I owe you, Sir?"

"That drink was just what I needed! How much is it, please?"

"That doughnut looks delicious! Is a quarter enough?"

We enjoy the food that we eat, and often, even though we must pay for it, we take food for granted.

For a moment, stop and think about how that food was made.

The farmer plants the seeds, yet he can't make them grow.

The baker mixes the ingredients, but he can't produce them.

Only HaShem causes it all to exist.

The Torah commands us to thank HaShem after every meal.

We must always remember that it is HaShem who allowed the seeds to grow into the wheat, and the wheat to be harvested into grain.

We are commanded to thank HaShem for allowing us to enjoy the fruits of the earth.

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To a young teacher who had recently accepted a post teaching children in an isolated community, and now wished to abandon his place to be closer to the Rebbe, the Rebbe said: The Baal Shem Tov taught that a soul may descend into this world for 70-80 years, just to do a favor for another. You are there only a few months and have performed so many favors for so many others -- yet all you can think of is abandoning it?!

From: Bringing Heaven Down to Earth by Tzvi Freeman - tzvif@aol.com