Final answer:
The difference between 1 and 2 units of weight is more likely detectable than a difference between 2 and 4 units due to relative perception of weight.
Step-by-step explanation:
The statement that a difference between 1 and 2 units of weight is more likely detectable than a difference between 2 and 4 units can be explained using the concept of relative perception of weight.
When comparing weights, our perception is influenced by the ratio of the weights rather than the absolute values. In this case, the ratio of 1:2 is smaller than the ratio of 2:4, making the difference between 1 and 2 units more noticeable.
For example, if someone has 10 apples and they give you 5, you might feel like you received a significant amount. But if someone has 100 apples and they give you 50, it might not feel as substantial, even though the absolute difference is the same.