this post was submitted on 16 Apr 2025
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Higher level language abstractions still run on top of efficient lower level engines. Python doesn't run on Python. Node.js runs script code in V8 which is a C++ engine. Typically, the plumbing heavy lifting is done by the lower level code via API calls, and the business logic layer on top is comparatively lightweight.
Of course, a developer could eschew those conventions. But I wouldn't feel comfortable shipping a video encoder written in something like Python, or even a mid-level abstraction language like Java or Go.