The discussion focuses on calculating the total change in internal energy for a monoatomic ideal gas, given initial and final pressures of 1.9 atm and 4.8 atm. The user attempts to apply an incorrect formula for internal energy, leading to confusion about the path dependency of energy changes. It is emphasized that the change in internal energy should be calculated as the difference between two states, not as an absolute value. Additionally, inconsistencies in the provided pressure values suggest a potential error in the problem setup, particularly regarding temperature and volume relationships. The correct approach involves using the equations ΔU = nC_vΔT and Δ(PV) = nRΔT to find the change in internal energy accurately.