At that time (2017) Apple had the notion that being thin was the best. We can see in their products that are very thin, such as thin smartphones, thin tablets, and this means that laptops are also thin. The design has become more sophisticated and seems very mobile because it is lightweight.
When compared with the previous laptop design (MacBook Air) which has a thickness of 1.7cm (0.68 inches), the MacBook has a thickness of 1.31cm (0.52 inches). In fact, the MacBook Air itself is fairly thin. However, Apple is still trying to be thinner.
