Many of the things occurring today have their counterparts in the past.
The population of humans has exploded only in the last hundred years or so. Still, human beings have been on this planet for the last several hundred thousand years.
In all these years, the collective memory as well as genetic memory has accumulated several experiences.
This process is perhaps behind the notion of tradition. Somehow, humans realized the fact that certain experiences of past generations can be useful to future ones.
A common example for this would be the countless hours of research done by past generations of scientists has today resulted in many advances for the benefit of humans.