"Two blobs alone in the Universe" is a thought experiment that poses the question of what would happen if there were only two beings in the entire universe and they were completely isolated from any other form of life or intelligence.
While it may seem unlikely, the scenario of two isolated beings in the universe is possible in theory. However, the likelihood of it actually occurring is extremely low.
Without any outside influence or previous knowledge of communication, it is unlikely that the two blobs would have a means of communication. They may resort to using gestures or creating their own form of communication over time.
It is difficult to say for certain, as there are many factors that contribute to the development of intelligence and consciousness. Without any external stimuli or interactions, it is possible that these blobs may not develop any form of higher intelligence.
If one of the blobs were to die, the other blob would be completely alone in the universe. It is impossible to predict how the remaining blob would react or if it would be able to survive on its own.