Reflective practice. Reflective practice is the ability to reflect on one's actions so as to engage in a process of continuous learning. According to one definition it involves paying critical attention to the practical values and theories which inform everyday actions, by examining practice reflectively and reflexively.
Preheat oven to 425F. Cut the carrots to match the length of the potatoes. Halve the potatoes lengthwise. Toss carrots and potatoes in a bowl with olive oil and season with salt and pepper. Spread the mixture evenly on a baking sheet and roast for 30 to 40 minutes, until potatoes are fork tender and lightly charred. Remove from oven and squeeze fresh lemon juice over the warm vegetables.
Place some cut up celery and carrots on the bottom of  a roasting pan and lay the roast on top if them. place it in the  oven. After about 15 minutes, turn the temperature down to 300  degrees. Cook for 17 minutes per pound.