another one. A calls B, A now owes 9999.. to B (via phone company, billing), if B calls A back at least once, we now know there is a link and every call between these two numbers goes as usual. two birds with one stone.…
another one. A calls B, A now owes 9999.. to B (via phone company, billing), if B calls A back at least once, we now know there is a link and every call between these two numbers goes as usual. two birds with one stone.…