The term herbert a. simon is identified in base64 scheme by the sequence aGVyYmVydCBhLiBzaW1vbg==, while the MD5 signature is equal to 3d25956e7db1f6d5802ad5c2f0700c6f. The ASCII encoding of herbert a. simon in hexadecimal notation is 6865726265727420612e2073696d6f6e.