The equation "0 + 1 = 1" illustrates a basic principle of arithmetic. In this case, adding 0, which represents nothing, to 1 results in 1. This shows that adding zero to any number does not change the value of that number. This concept is fundamental in mathematics and is often used in various applications, such as counting and calculations. Understanding that 0 has no value helps clarify how numbers interact in addition, reinforcing the idea that 1 remains unchanged when 0 is added.