I get your point that cord or string should be in good condition to tie knot but I am talking about my execution of work that how I executed it accurately.

As this is not a new cord or string that's why it is getting poor but for this your already deducted my point 0.5 in overall presentation of post.

Secondly you are right that I have written those daily life uses which I can't do by myself but with that I have mentioned those users too that I can do like;

I can use flat curl knot as a dressing and for providing first aid

I can use ballestrinque knot for lowering objects or people.

I can use guide ace knot during climbing on mountains or rocks

Remaining uses are those I have explained that are extra which I can't do by myself but these uses also exists