danzk

I think what you are seeing is the effect of optical brighteners that are used in paper. They absorb UV light to and emit blue light to make the paper look whiter. The amount of UV light in the environment changes the color of the paper.

Craig Blackwell on YouTube has a great series of videos about the fundamentals of color vision. https://youtu.be/iDsrzKDB_tA

There are videos of a Gears of War PS3 port floating around, which was used for testing purposes.

It's expensive and difficult to scale when you're trying to make millions of doses.

There's nothing medically wrong with the approach, however protein based pharmaceuticals are slow and expensive to manufacture, which isn't ideal when you are trying to vaccinate millions of people, cheaply.

To manufacture a protein you need to create a genetically modified bacteria that contains the DNA for that protein, grow a large batch of this bacteria (which can be difficult at scale), and then break open the bacteria filter out all the other proteins and just keep the one you want.

This is why the mRNA is so elegant, it gives your body the instructions to manufacture the protein itself.