I am a bit disappointed by the low number of planets. If they can detect us, we should also be able to detect them in the next 5000 year. But the creation of li

I am a bit disappointed by the low number of planets. If they can detect us, we should also be able to detect them in the next 5000 year. But the creation of life appears to be a rare event, e.g. Venus and Mars are very similar to Earth, but they have no life. So it seems that the possibility that humanity can find alien life within a reasonable time span is pretty low. The article states that the existence life could be determined by looking at the sharply rising CO2 levels, but those could also be ascribed to volcanic activity.