The weak nuclear force is one of the four known fundamental forces of nature, together with electromagnetism, gravity, and the strong nuclear force. The weak nuclear force is responsible for interactions of subatomic particles and radioactive decay, like the fusion happening in the Sun. If the weak force were any stronger the Sun would already have burned out. If it were weaker, the Sun wouldn’t have ignited at all. So let’s all be glad things worked out the way they did!
Keishinrei 