Yeah Morgen is a perfect example.
This is the part that I was referring to FYI;
All items have a chance of being dropped that is expressible as a number—their drop rate. In Old School RuneScape, drop rates are treated independently from one to the next; meaning no previous drops decrease or increase the drop rates for future kills.
Drop rates such as "1 in 5" do not guarantee such a drop will be obtained after 5 kills. Instead, it can be thought that on average, a player would receive the drop once per 5 kills, with the chance to receive more or less. While a player killing such a creature 30 times and not obtaining such a drop is unlikely, the players' chance of their next kill obtaining the drop remains the same.
While somewhat counter-intuitive, probability itself cannot be simply multiplied per drop. For example if one were to calculate the chance of receiving a drop at least once after 100 kills as 10%, it would not become 20% after 200 kills. If it was additive, then the chance after 1100 kills would be 110%, which is impossible as probabilities are always equal to or between 0 and 1.
"In Old School RuneScape, drop rates are treated independently from one to the next; meaning no previous drops decrease or increase the drop rates for future"
= like in roulette...if you choose black, and ball lands on Black & you win, that doesnt mean its gonna be black the next bet,
"Drop rates such as "1 in 5" do not guarantee such a drop will be obtained after 5 kills"
= picking any number between 0/00 & 38, doesnt mean that at any time, the chose number will be the winner (ball land on the number).
yet, the number exist, and it's possibility that ball can land on it.
"While a player killing such a creature 30 times and not obtaining such a drop is unlikely, the players' chance of their next kill obtaining the drop remains the same."
= i.e. even if you fuck up and place your bet on the number 19 11.000x in a row, and it never land on number 19.
(which is unlikely)...it doesnt matter, because your chances of it landing on 19 , stays the same ..50-50 lol.
the rest is non-sense about some probablity bs.
idk, it's 50-50 apparently with each kill..
either you get it - or you dont.
simple