You are supposed to make a cell phone, now that you can make metals. Next steps are 1) battery 2) light bulb 3) transistor. I forgot 0) glass. You need it to m

You are supposed to make a cell phone, now that you can make metals. Next steps are 1) battery 2) light bulb 3) transistor. I forgot 0) glass. You need it to make a microscope for integrated circuits. Siege weapons are particularly not period, because you need some substantial infrastructure to destroy.