Yeah that's what I was referring to, the last 10% takes 90% of the time. Or the difficulty of getting from five 9s to nine 9s. In this case the final 1% is 200

Yeah that's what I was referring to, the last 10% takes 90% of the time. Or the difficulty of getting from five 9s to nine 9s. In this case the final 1% is 200x harder than getting to the initial 95%.