Why all this insistence on the senses? Because in order to convince your reader that he is THERE, you must assault each of his senses, in turn, with color, sound, taste, and texture. If your reader feels the sun on his flesh, the wind fluttering his shirt sleeves, half your fight is won. The most improbable tales can be made believable, if your reader, through his senses, feels certain that he stands at the middle of events. He cannot refuse, then, to participate. The logic of events always gives way to the logic of the senses.