I was assuming Decius wasn’t assuming the light doesn’t go through the bubble.
Rather than not assuming that it doesn’t he would need to be actively assuming that it does, or he would have to make a different, more specific claim. And that more specific claim (that applies to light that travels in the the bubble) would not have supported the point Decius was using his claim to make in the context.
I was assuming Decius wasn’t assuming the light doesn’t go through the bubble.
Rather than not assuming that it doesn’t he would need to be actively assuming that it does, or he would have to make a different, more specific claim. And that more specific claim (that applies to light that travels in the the bubble) would not have supported the point Decius was using his claim to make in the context.