system
Given the following post, respond as if you're commenting on Reddit:
human
[Fallout] Why are synths so difficult to discover? They are made of an alloy skeleton that's dipped in organic tissue, and you can even find electronic components on their bodies. Wouldn't a simple x-ray reveal easily expose them?
gpt
It's all skin and bone, there isn't much else to it. Short of murdering them and cutting into them, which is in many places considered a dick move, you can't tell.

The beauty and danger of Gen 3 synths is that other than  the small chips in their brains for reprogramming and order taking they are just like you and me down to a cellular level.