Its called the butterfly effect.In the eighties something happened in Iran that affected its silver exports, that caused an increase in dental cost around the world ,the reason being silver is a major component in dental fillings.
So what is happening in japan might affect us in ways we are currently unable to pinpoint until it takes effect.
'......to the acknowledgment of the mystery of God, and of the Father, and of Christ; 3 In whom are hid all the treasures of wisdom and knowledge.' Colossians 2:2-3