Exponential Growth

If you travel few centuries back in time and try to explain the people of Roman empire non tangible concepts about software,artificial intelligence,quantum computing, what would their reaction be?

They probably won't understand horseshit because these concepts are beyond their realm of understanding and intelligence. We have come to quantum computing step by step and not with a giant leap.

So how can you expect to comprehend the technology and the biological form of some alien being who are maybe 1 million years or 1 billion years older than us when we can't explain our technology to ourselves few hundred years back.

They will be so advanced that we won't be able to recognise them if they stood near us.

According to cosmologist John Davis,

Yup that's him. He believes that we'd be lucky to recognise a billion year advanced beings. They may not be made of matter at all. They may not have any physical form, not constraint by space and time, they won't act or think like we do. For example say you were looking at a worm, standing right above it, the worm wouldn't sense anything because they are so primitive compared to us.

We might not be alone. Even at this moment we might be surrounded by these advanced beings and not comprehend them at all. They might be watching you behind your back as you scroll down.