Hacks are novel. “Is that allowed?” and “I didn’t know you could do that!” are both common reactions to hacks. What is and isn’t a hack also changes over time. Rules and norms change. “Common knowledge” changes. Because hacks tend to be eventually either forbidden or allowed, things that were once hacks no longer are. You once had to jailbreak your smartphone to turn it into a wireless hotspot; now hotspots are standard features in both iOS and Android. Hiding a metal file in a cake sent to a jailed confederate was initially a hack, but now it’s a movie trope that prisons will be on guard
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