rewrite following chapman thesis ch2

Created by  Fi16Ka6f4bget8foxQRWszq749Zub3y9dC3XmFoMpoqr  on October 21, 2021

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init repo

Created by  Fi16Ka6f4bget8foxQRWszq749Zub3y9dC3XmFoMpoqr  on October 16, 2021

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init repo

Created by  Fi16Ka6f4bget8foxQRWszq749Zub3y9dC3XmFoMpoqr  on September 28, 2021

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