Signal-to-Noise
Here’s an interesting image posted by one of my networking professors during lecture that contrasts a distorted signal to its ideal form:

What you’re seeing here is a small blip in a stream of data being transferred across a network (it could be a video from Youtube or a Facebook profile image). Ideally, we’d like that blip to be nicely defined to the point where we can confidently say if it’s a 1 or a 0 and turn it into something useful like a MP3 file. But in reality, this blip would be distorted, sometimes beyond the point of recognition.
Many people have devised smart ways of mitigating the effect of this distortion; they’ve created sophisticated algorithms for how the data is transmitted and how it’s checked for errors.
It’s pretty amazing how much complexity is behind the deceptively simple concept of transferring data.. and it’s completely invisible to our daily lives.








