A party who signs a document known and intended to affect legal relations, and who twice executes statutory declarations confirming receipt of independent legal advice and voluntary signing, cannot rely on non est factum where the party asserts no disability, misrepresentation, or vitiating factor, and the evidence shows the party's mind went with the signature. The objective assessment of assent may be established through the totality of email correspondence, conduct, and statutory declarations surrounding the signing.
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