/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: nyashamacheka https://cdn.slidesharecdn.com/profile-photo-nyashamacheka-48x48.jpg?cb=1568060886 the absence of proof isn't necessarily the proof of absence,since there are known knowns,known uknowns,uknown knowns and uknown uknowns.so be carefull coz u dont know wat u rilly know or dont know and also,wat u dont know whether u know or not. cool, calm and collected