I understood the reference, I laughed at the reference.
But I was talking about something else.
These artifacts can be derived procedurally.
The creators of modern development tools have made this process somewhat more complicated:
var num1: PackedFloat64Array = [0.2, 0.1]
var summ1: float = num1[0] + num1[1]
print(summ1) # 0.3
print(summ1 - (0.2 + 0.1)) # 0
But if we reduce the accuracy of the calculations:
var num2: PackedFloat32Array = [0.2, 0.1]
var summ2: PackedFloat32Array = [num2[0] + num2[1]]
print(summ2[0]) # 0.30000001192093
print(summ2[0] - (0.2 + 0.1)) # 0.00000001192093