posted on Sep, 17 2009 @ 07:40 PM
reply to post by tothetenthpower
Well, one. You throw away the old one and you use a new one. However, if the lightbulbs used for the production of the lightbulb are to be included
then one could never be sure as to the exact number taking into consideration that a lightbulb is consisted of other materials which needed light as
well in order to be mined and since this materials and the lightbulbs as a result could not be produced without a source of light then we have to take
into consideration the lightbulbs which were needed so that the lightbulbs that provided light for the production of the new lightbulbs could be
produced which would in reality lead us to an ever increasing number of lightbulbs...