Skill tests:
    discovering an existing sublocation
	discover_subloc vs. subloc_concealment - subloc_size_diff
    finding another stack in a location
        discover_stack vs. stack_conceal - stack_size_diff


--CODE--
import whrandom

# the fundemental skill test
def skill_test(a,b=50):
    float_a = float(a)
    float_b = float(b)
    target = float_a / (float_a + float_b)
    if whrandom.random() <= target:
        return 1
    return 0