According to Boccaccio, some people believed the sins of some to be the cause of the plague. They believed that God punished them for committing sins by giving them the plague
At once a voice arose among
The bleak twigs overhead
<span>In a full-hearted evensong
</span>Had chosen thus to fling his soul
<span>Upon the growing gloom.</span>
The argument relies on claims that are not backed up by facts
I do not know what your question is but if you are asking what is it then it could be a pipe under water that is dripping at a constant rate underwater which is why you only find it while wearing scuba gear.