This reminds me of a comic I once saw, where two people are looking at a number on the ground from different angles. One person, at one end of the number, says it's a "6" while the other, from the opposite side, claims it's a "9". I think the point of drawing was to show how perspective influences how you view something, which is certainly true and especially so in situations where there is no definitive answer you can look to.
But it also makes you think: someone else, some other third party, painted that number on the ground. Whoever put it there had an intention behind it and surely had their own idea on what it was (a 9 or a 6). Not to mention, it's always important to take into account the greater context- is there other text beside the number to which you can align yourself with and figure out how it should be read? When put next to, say for example, a 4, the "9 or 6" loses its ambiguity and it can only be one of the two.