Hacker News
points by namenotrequired 19 hours ago | 0 comments
This is often said (also about the Viking age) and it seems such an incomplete explanation to me. Normally if more people are born than the land can feed, then vulnerable people (eg babies and kids and elderly) die at higher rates until the balance is restored. Why would Scandinavia be different?
[–] jltsiren 9 hours ago
There are often cultural elements in that balance. Many societies had cultural adaptations that lowered fertility under normal circumstances but enabled faster repopulation after a crisis. But if there was an outlet for excess people, the base reproduction rate could be higher.

For example, the Roman Republic had adapted to constant warfare and the steady stream of casualties caused by it. And then the Late Republic got into trouble, because Rome had become too good at war, and the required casualties didn't happen.

[–] mr_toad 18 hours ago
They didn’t just have the motivation to leave, they also had the opportunity.

Their longboats made them amphibious. Their ships were durable enough for the open ocean, but still able to land on any beach, or sail fair upriver.