By saying classic pyramid scheme what does it imply?

[Zhangbaixiang]

Business English Lesson, Advanced Level

ESL/EFL Test #162 "Internet Investing", question 9

Many investment programs are just an internet version of the classic ......... scheme in which participants attempt to make money simply by recruiting new participants.

(a) escalation
(b) hierarchy
(c) level up
(d) pyramid

Business English Lesson, Advanced Level

ESL/EFL Test #162 "Internet Investing", answer 9

Many investment programs are just an internet version of the classic pyramid scheme in which participants attempt to make money simply by recruiting new participants.

Correct answer: (d) pyramid

Your answer was: incorrect
Many investment programs are just an internet version of the classic hierarchy scheme in which participants attempt to make money simply by recruiting new participants.
_________________________

By saying classic pyramid scheme what does it imply?
thanks.
_________________
I have a dream and I want to know the secret of time and universe.

[Mister Micawber]

Do you know what a PYRAMID SCHEME is?
_________________
Native English teacher at Mister Micawber's