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The Global Peace Index is a measure of the peacefulness of 163 countries and regions around the world. It is based on 23 indicators across three domains: societal safety and security, domestic and international conflict, and militarization. A lower score indicates a more peaceful country. The index covers 99.7% of the world's population and is widely used as a measure of international peace.

The M3 and M4 chips represent a single generation of evolution, but the M4 brings several key improvements that could be significant for certain users. While both are incredibly powerful, the M4 focuses on enhanced AI capabilities and improved external display support.

There's about two years of technological evolution between the M2 and M4 chips. This means that while both are powerful, the M4 brings significant improvements, especially in AI processing with its enhanced Neural Engine, as well as notable changes to displays and external connectivity.

There's been about three and a half years of technological innovation between the M1 and M4 chips. Because of this, there are significant differences in performance, display, design, port configuration, and many other areas.

While both the M4 MacBook Air and MacBook Pro are equipped with the M4 chip, their design philosophies and target users are significantly different. Let's delve into their features to make a more detailed comparison.