A childish criticism to reincarnation
When the earth reached the amazing number of 6 billion people, some have argued, "Well, if the world always increases the number of its inhabitants, how can reincarnation be explained, if its concept is based on the return of people who lived on Earth before?"
This question is nothing else but a childish criticism to the successive lives doctrine.
On a football match there are eleven players on the field representing the football club, and right there,on the bench, other athletes waiting for a possible replacement. On top of that there are also a contingent of players who are part of the club and also train with others, although they are not seen on the field.
The Earth is not only made of billions of incarnated creatures who populate different countries, its contingent is much bigger. There are people who live here for aproximately 70, 80, 90 years and further 100 years in the spiritual life, which is the period between different physical existences. When these people are not owning a material body, someone is occupying their places, their homes, their jobs, their role in bodily existence. When they return to this plan, others will leave and it is exactly the set of visible and invisible population combined that makes the earth community.
Also, there is another point to be considered. The planets are solidary with each other. Remember what happens in a city like Londrina. The local University has students coming from many different places, not only from the Parana state, but also from Sao Paulo, Minas Gerais, Mato Grosso, and many others.
The same happens with the planets. In its evolutionary path, the Earth is a place of emigration and immigration of individuals. The individuals that leave Earth have nothing more to learn from here. What would Francis of Assisi, Einstein, Socrates, Newton and Beethoven do on Earth? Our world is, in evolutionary terms, below their potential and, therefore, they will seek culture and spiritual development in another worlds that are more compatible with their evolutionary level.
The Earth also receives spirits that come from planets which have similar or even lower evolutionary level than ours. This migration is part of God's laws. There is a whole mixture of ethnicities, cultures, experiences, and it is precisely this mixing that drives the progress of the worlds.
God’s law compels us to progress. The only way to achieve progress is by repeating experiences, relearning, repairing damage, doing the good, spreading the culture, building the peace.
“Birth, death, rebirth and constant evolution, such is the law of life”. This is in summary what the spirits have taught us about.