The three reasons in believing the sensory perceptions are: that when ever we touch any thing, it may be cold or hot , soft or hard, we get a feeling known as the sense of touch which then reacts by sending a message to our brain making us reacts towards it and at once we just move our hand away from it, but if it manageable we don't react.
Same thing with the sense of sight, when we something that is acceptable by us we keep seeing, but as we see something dangerous which is ...