(
//make a new file:
f = File("matrix", "w");
)
//fill it with a 100x100 matrix whose chances of being connected are
//logarithmically decreasing as we proceed down by row. 
(
100.do{|x| 
	100.do{
		var num;
		num = x**4 < (100**2).rand;
		if(num, {f.putChar($1)}, {f.putChar($0)});
		};
	f.putChar($\n);
	}
)
//close the file.
(
f.close
)