I went through the arguments against samatha practice one by one, taking what was said by the vipassana masters and comparing it closely with the suttas. Time after time, I saw that what they were saying was not supported by the sutta passages they were quoting; and that the further i went into the suttas, the more essential samatha seemed to become.
It became more and more clear to me that in order tio sustain their argument, the vipassana school had to systematically explain away all the major teachings on practice, using the complicated Abhidhamma framework, which I had earlier come to realize was not at all in accord with the Suttas.
Eventually, I decided to note down a few of these observations in the essay that was to become A Swift Pair. The book was written by hand, and typed up by some supporters in Ipoh.