2 + 2 = 5 for very large values of 2

discuss

its a joke about rounding

i.e. 2.4 gets rounded down to 2

but 2.4 + 2.4 = 4.8

and 4.8 gets rounded up to 5

so, to no decimal places, 2.4 + 2.4 = 4.8 gets written as 2 + 2 = 5