'The Roman poet and philosophy Lucretius proposed the following thought experiment. If the universe has boundary, we can throw a spear at this boundary. If the spear flies through, tin it is not a boundary. If the spear bounces back, there must something beyond this boundary that is itself in space, which means it is not a boundary at all. Either way, it turns out that the universe has no boundary.
How best can the form of Lucretius’! Argument for the infinity of space bf described?