Is a signed note valid when someone dies leaving their estate to a specific person?

A signed note can be considered valid as a will if it meets the legal requirements of the jurisdiction, such as being signed by the deceased and, in some cases, witnessed. However, informal notes may face challenges in probate court, as they may not comply with formal will requirements. It's essential to consult with a legal professional to determine the validity of the note and ensure the deceased's intentions are honored.