SMART CONTRACTS, DEFI & WEB3 SECURITY - Chapter 6, Exercise 1 Solution
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Why MakerDAO Undercuts "DAOs Are Fundamentally Unsafe"

PROBLEM
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Using this chapter's own MakerDAO example, explain why MakerDAO's own
continued operation since 2017 is real evidence against the claim that
"the 2016 DAO hack proved DAOs themselves are fundamentally unsafe."

SOLUTION
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The claim treats "DAO" as though it were one single, uniform thing
that either works or doesn't - but the 2016 DAO hack, as this chapter
and Chapter 3 both established, was actually a specific, exploitable
flaw in one particular contract's own code (a reentrancy vulnerability
from failing to follow Checks-Effects-Interactions), not a flaw in the
general concept of token-weighted, on-chain governance itself.

MakerDAO is real, direct evidence for this distinction: it launched in
December 2017, a little over a year after the original DAO hack, using
the exact same general organizational pattern (smart-contract-encoded
governance, token-weighted voting) - and it has continued operating
successfully for years since, governing real, significant financial
infrastructure (the DAI stablecoin) the whole time. If the DAO pattern
itself were fundamentally, inherently unsafe, MakerDAO's own continued,
successful operation across many years would be a genuinely surprising
outcome.

What actually happened in 2016 is better understood the way Chapter 3
framed it: a specific piece of code, written a certain way, contained a
specific, exploitable bug. That's a real, serious problem for the
project that shipped that particular code - but it's a claim about
that one implementation's own quality, not a mathematical proof about
every possible DAO built afterward, any more than one badly-written
traditional company's own bankruptcy would prove that "companies" as a
legal structure are fundamentally unsafe.

ANSWER: MakerDAO's own multi-year, continuous, successful operation
using the same general DAO pattern shows that the 2016 hack was a
failure of one specific contract's own code (a real, exploitable
reentrancy bug), not evidence that the underlying DAO concept is
inherently broken - if it were, a real, established DAO like MakerDAO
should reasonably have failed the same way by now, and it hasn't.

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WHY THIS WORKS AS AN ANSWER

This uses MakerDAO's own real, sustained track record as concrete
counter-evidence against an overgeneralized claim, while correctly
attributing the 2016 hack to Chapter 3's own specific technical cause
rather than the DAO pattern in the abstract.