[ryzvonusef]

I was doing a coursera project and it kept raising duplicates from what I thought were random strings of numbers and characters and therefore should be unique, took me a while to figure out what was happening:

https://sites.google.com/view/ryzvonusef/process

Wasted a week's worth of effort, but I learnt a valuable lesson.

[pbhjpbhj]

Spoiler: Data read into Excel/Google sheets was interpreted as scientific notation, this caused uniqueness errors.