Why did pascal question whether human beings could
achieve scientific certainty?

Answer/Explanation:

After his vision and newfound purpose of pursuing religion, Pascal tried to convert rationalists to  Christianity by appealing to both their reason and their  emotions. Humans were, he argued, frail creatures, often  deceived by their senses, misled by reason, and battered  by their emotions. And yet they were beings whose very  nature involved thinking: "Man is but a reed, the weakest  in nature; but he is a thinking reed."

Despite his own background as a scientist and  mathematician, Pascal refused to rely on the scientist’s  world of order and rationality to attract people to God:  "If we submit everything to reason, there will be no  mystery and no supernatural element in our religion."

Thus, Pascal believed that humans were swayed by their own emotions, morals, etc. that they could never completely achieve scientific certainty without having bias.

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the lowest among the social higher rank were the working class. this class remained detached to the political progression   of the country and was hostile to the other two classes