The Rule of 4
The Rule of 4
By Blog.Admin
My theory: You cannot claim to have thoroughly visited Antarctica unless you've been at least four times. The reasoning: Antarctica in November to mid-December is different than January to mid-February, which is different than mid-February to March. The fourth visit would be by icebreaker.
You could reduce the rule of 4 to 3 if you combined the icebreaker with one of the first three visits. Or you could increase the rule of 4 to 5, if you left a visit to South Georgia out of steps 1 through 4.

