On the slides, Yu Yaoming was showing his derivation step by step: "Among the forms of life we're familiar with, there is a limit value to how much tidal effect we can withstand. Once this limit is exceeded, the molecular structure of our bodies will be damaged.
This is a basic assumption based on our current knowledge, because none of us has ever really gone near a wormhole. No one knows what kind of changes we'd undergo near a wormhole, or even inside a wormhole itself.
If we switch to another assumption, we might transform from carbon-based life to silicon-based life. Our form of life might break free from the current molecular structure, or even atomic structure, in order to adapt to the extreme changes around a wormhole.
Or our structure might not change at all, but under the influence of some kind of energy, a negative energy density might appear in a local region, creating a relatively stable environment around the wormhole..."
