When the court should not rely on evidence of handwriting expert regarding proof of forgery in execution of will?

[Educator]

Dr. Khatri's report is an elaborate analysis of the Testator's signature. He compares the signature on the Will, which he calls "Disputed Document Q", to four documents, viz., three letters to the Bank of Baroda dated 23rd February 1987 (called, respectively, "Known Document K-1"); 8th April 1988 ("Known Document K-2"), and 22nd September 1989 ("Known document K-3"), and the passport of the