How Many Companies Can a Market Support?

In nature, the size of a population tends to be regulated through various means. For a virgin habitat, a new species occupying it may multiply rapidly till it reaches a point where the population is stabilized and does not see further increases in number. For a habitat that already hosts a number of different species forming a community, some of those species might have reached the stability point where its population is being regulated. Too much crowding of a species in a given area would limit its reproduction and even its growth. The increase in number may also make the population more prone to falling prey to some predator. Other forms of population size regulation also exist in the natural world.

In the business ecosystem, similar forces exist to control the 'population' of businesses in a given market. Too much businesses targeting the same market may witness a decline or a reversal and become weakened due to very high competition on resources (the market) which can no longer sustain them all.

Real Reason Behind 18+ Marriage Law

The longer the average age of humans the longer is the age of each generation. The younger the age of marriage the more overlapping that takes place between generations. A child may normally see his grandparents in some communities while in others it is common for a child to see his great grandparents and still in others to see his great great grandparents! When life is longer and age of marriage is less, more generations tend to overlap.

As more generations overlap, populations tend to increase rapidly. Restricting age of marriage to be 18+ tends to cap this a bit. Enforcing such rule on developing countries too assists in restricting their high population growth rate.

Scientifically speaking, some people do not mature physically and/or emotionally even after they are 18 years old while others mature both physically and emotionally way before they are 18 years old. The arbitrary marriage age of 18 years, even if taken as an average of maturity, is just an easy way for law makers to have a one-size-fits-all law that can be easily enforced notwithstanding its inaccuracy and nonconformity to the sciences of biology and psychology.

Life Tables

Life tables are commonly used for animals and plants. It is interesting to use life tables for humans too. It provides interesting stats for a given population. It would be nice to compare different peoples living in different regions of a country and see how their life tables differ. That would be quite an interesting analysis. Plotting the tables in graph form would make it easier to visualize and come up with insights.