Apologies for any offence. As this site has many questions based on [books](https://money.stackexchange.com/search?q=textbook), 
I'm disheartened by RonJohn's [comment](https://money.stackexchange.com/questions/108634/what-does-in-reliance-on-the-security-of-their-receipt-mean?noredirect=1#comment206137_108634)

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> I'm voting to close this question as off-topic because this --and the similar one you recently asked -- look a lot like homework that should be asked on Law.SE.
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and [this](https://money.stackexchange.com/questions/108634/what-does-in-reliance-on-the-security-of-their-receipt-mean?noredirect=1#comment206142_108634)

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> It looks like homework, since you're quoting a textbook named Contract Law. So even if you aren't a law student, it's still off topic. 
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I'm befuddled why RonJohn thinks my questions are homework? It isn't homework. I'm reading for fun.