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Since when does bending light require distorting the fabric of spacetime? All you need is two transparent materials of different densities, they don't have to be heavy, and you will bend light as it passes from one to the other, it's called refraction.

They created / update / maintain Scala and it's suite of tools and packages (akka etc.)

There is no minimum mass required to bend light. Why does bending light suggest something "so heavy" to you?

I assume aaronbrethorst is thinking of gravitational lensing.