Over the last century, humanity has experienced extraordinary technological leaps. This progress confirmed our belief that our technological potential is unlimited. Consequently, this assumption was also applied to extraterrestrial civilizations.
Combined with the discovery of many potentially habitable planets, this baffles scientists – why haven't we found evidence of smart extraterrestrial life?
If advanced alien civilizations could spread rapidly through space due to their technological prowess, why haven't we encountered them?
According to a recent hypothesis published in the journal ” Futures magazinethe reason may be a widespread limitation in the technological development of intelligent species.
This limit, much lower than the capacity to colonize the galaxy, may explain the lack of alien civilizations in our observations.
Scientists suggest that we may never encounter an interstellar alien civilization or even receive a signal from one, because every civilization in the universe is likely reaching a technological ceiling.
Looking at human history – marked by the rise and fall of civilizations, technological breakthroughs and no visible intelligent aliens – researchers suggest that the technological possibilities of all advanced species, including humans, are not infinite.
Of course, there are physical limits to what we can achieve, such as the inability to travel faster than light. Although we have developed technology that allows us to explore the universe at subatomic levels and on vast scales, the costs of pushing these limits are becoming prohibitively high, scientists say.
The authors of the study point out that the last major breakthroughs in understanding the Universe, such as the theory of relativity and quantum mechanics, took place almost a hundred years ago.
Although we now have a much deeper understanding of phenomena such as black holes, these advances have not had as profound an impact on our technological capabilities as earlier discoveries.
As the costs of developing new technologies increase, humanity may eventually decide that further development – one that would enable us to become an interstellar civilization – is simply not worth the investment. The hypothesis suggests that the same scenario could occur in other intelligent species.
From this point of view, alien civilizations may also decide that survival does not require the expensive technologies needed to colonize the galaxy. They may choose to focus on maintaining their existence within their own star systems rather than expanding beyond them.
Despite these limitations, scientists do not completely rule out the possibility of detecting signals from other civilizations.
Although universal technological limitations may prevent large-scale galactic expansion, aliens could still send probes similar to NASA's Voyager 1 and 2 probes, which ventured into interstellar space and still transmit signals that can be received on Earth.
This new hypothesis offers one potential explanation for why our search for interstellar civilizations has so far been unsuccessful.
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