How Sounds Soften Over Time
Languages naturally drift toward efficiency by softening difficult consonants. This phenomenon, known as lenition, can turn crisp sounds into gentle breaths or even cause them to vanish entirely.
Think of lenition as the path of least resistance for our mouths. Instead of the effort required for sharp consonants, we often relax our tongue or lips to produce sounds that flow more easily in speech. Over generations, this invisible process transforms entire words as they drift from their original forms. It is essentially your mouth choosing the laziest route to communicate the same idea.
Source: Lenition