Prof. Ismaila would be proud of you! I wish i read this post before my exams, maybe i would have had a higher grade but you probably haven't joined steemit by then.
Interchangability gives us the ability to get things fixed without worrying about the "original". Great post sir.
Lol. Even I didn't understand it this much then.
Yeah, we wouldn't be too careful protecting just the original.
Thanks for stopping by.