A skeptic might ask, “Couldn’t a more technologically advanced civilization develop new sources of fuel that require less mass?”
We are not saying DNA is like a message. Rather, DNA is a message.
Here is the problem with speculative thinking about extraterrestrial life as well as about the origin of life.
The smaller a design, the harder it may be to detect. But miniature designs can inspire awe more than large ones.
I picture Ohio University officials turning as red as Mars over Professor Romoser’s exotic claims.