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Alfred is having trouble with his car so he visits his friend Glen, who is a mechanic, for some free advice. Alfred asks Glen just to look at the car and determine what is wrong, but not to fix it. Glen looks at the car, determines the problem, and repairs the car using parts and materials he already had in his garage. Alfred takes the car out for a test drive, and it performs better than it ever has. Alfred tells Glen that because Glen fixed his car, when Alfred gets paid again he will buy Glen the new torque wrench that Glen has been wanting. A week later, Glen asks Alfred about the torque wrench, and Alfred tells Glen that he has changed his mind. If Glen sues Alfred to enforce his promise to buy Glen the torque wrench:

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