if i start googling i cud gt lot of concrete knowledge abt the topic.. bt lets see wt i think.. oh i used a word "think".... hmm so game is over before its start..
nevertheless as said above senses are hearing, smelling, sighting, tasting and touching... bt wt abt the ability of human brain related to "thinking".
some says i feel tht guests are to come today n guests do, others feel they wud fail in the exam ths time n they do... these type of predictions and feelings are not any magic bt actually calculated game of thoughts in some part of our brain.. i also think sometimes abt different things to take place n they actually do... then wt shud i say? is it my magic or my power of astrology... nah i guess it's nt like tht.. right?! well well it's something tht our brain says n we feel.. thinking then outburst of feelings, seem they're co-related.
so to my point of view, six sense does exist n it's solely and wholly outcome of our various thoughts, intuitions n feelings..