2 grammar and breaking into more paragraphs for clarity
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Whenever someone (A), A, sends a confirmation, apparently sheA thinks there ismay be a risk that the other person (B), B, will not come unless a confirmation is received. But

But it is possible that the confirmation from A is lost along the way, which. That means that if A doesn't hear anything elseback, there is indeed a risk that the confirmation was lost and B will not come; and perhapscome.

Perhaps this risk is enough reason for A not to come herself. Hence, B, when receiving a confirmation, may worry that A will not come, unless he (B)B sends another confirmation. And so it continues.

Whenever someone (A) sends a confirmation, apparently she thinks there is a risk that the other person (B) will not come unless a confirmation is received. But it is possible that the confirmation from A is lost along the way, which means that if A doesn't hear anything else, there is indeed a risk that the confirmation was lost and B will not come; and perhaps this risk is enough reason for A not to come herself. Hence, B, when receiving a confirmation, may worry that A will not come, unless he (B) sends another confirmation. And so it continues.

Whenever someone, A, sends a confirmation, apparently A thinks there may be a risk that the other person, B, will not come unless a confirmation is received.

But it is possible that the confirmation from A is lost along the way. That means that if A doesn't hear anything back, there is indeed a risk that the confirmation was lost and B will not come.

Perhaps this is enough reason for A not to come. Hence, B, when receiving a confirmation, may worry that A will not come, unless B sends another confirmation. And so it continues.

1
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Whenever someone (A) sends a confirmation, apparently she thinks there is a risk that the other person (B) will not come unless a confirmation is received. But it is possible that the confirmation from A is lost along the way, which means that if A doesn't hear anything else, there is indeed a risk that the confirmation was lost and B will not come; and perhaps this risk is enough reason for A not to come herself. Hence, B, when receiving a confirmation, may worry that A will not come, unless he (B) sends another confirmation. And so it continues.