The forum post seems to be down; i'll put it in once it works.
Basically you start on a small island like the one above, with a chest filled with stuff that you need to survive (pumpkin seed, melon slice, bucket of lava,2 ice blocks...)
My attempt so far:
Agriculture, the need to gain materials and food!
Industry! making versatile materials such as cobble, Or turning wood into charcoal!
I completely removed the block, abseiled down with water and built a wooden platform under the dirt, then dug all the dirt out!