How reliable are sense and perception?

So as I mentioned before, perception/sense perception is a way of knowledge- meaning that sensing and perceiving things can help us know and understand the things around us.
However there are some downsides to this, as we know that not everything we see is actually there. In addition, we are able to 'see' things without our eyes; we can use our other senses. To prove my point below is a video of a boy who is living his life normally; without any eyes, but he can still 'see'

This is proof that we do not need ALL of our senses to see, smell, hear, feel or taste, we only need some and overtime we will get used to using them efficiently. 

Moreover, our senses can store their own memories, for example a certain smell or taste can remind us of a past event in our life, this means that our senses are not just 'objects we use', they are apart of us and they help us get through our lives, without them we would not be able to do anything at all.

But how RELIABLE are sense and perception?
We can't come to a conclusion when we are stating the reliability of them, as they are quite subjective- everyone sees things differently.

Do we really only have 5 senses?

We don't need eyes to be able to see and we do not need to touch something to be able to feel it, we do not need to smell something to be able to taste it, why? Because we have multiple sense, not just 5, in fact we have a total of 10 senses. The other 5 senses are probably unfamiliar to you, this is because they are connected to our inner body, not external; these senses are: nociception, chronoception, proprioception, equilibrioception and thermoception. 
I'll briefly break down each one for you.

Nociception: is the sensory nervous system's response to certain harmful or potentially harmful stimuli.

Chronoception: sense of time 

Proprioception: the sense of body movement and position 

Equilibrioception: balance; prevention of falling over when standing 

Thermoception: the sense of temperature 

Yes these sense may sound strange, but without them we wouldn't be able to function properly, they are vital in our lives. Could you imagine living without a sense of time? You wouldn't sleep at the right time and you wouldn't be able to attend that life-changing interview on time 

Do YOU know or do WE know?

There is much confusion when it comes to deciding how we know something and whether it's something that we gained knowledge of on our know or if we gained knowledge of it with the help of the people around us. So, let me tell you this- there are 2 types of knowledge: personal knowledge and shared knowledge- you could probably already guess what both mean, but I'll explain to you the difference between both (in more detail).

Personal knowledge 
it's something that YOU know, for example you are the only person who would know what YOU like and don't like, e.g. "I know that I like to listen to music"- that is something that only YOU are sure of, other people may think that you like music, however they may not be sure, only you can be sure of that.

Shared knowledge
it's something that you and a group of people know of- which can develop overtime e.g. faith/religion, as well as history- shared knowledge is something that we share with other people with similar characteristics/interests

So what links these 2 types of knowledge?

• both result in us learning from new experience
• shared knowledge can help influence personal knowledge 
• sharing knowledge can help an individual realise things they may not have realised before- about themselves