Until someone decodes it with a confirmed key, this string remains an open puzzle for amateur sleuths.
Whether the exact decoding is "you are my sunshine" or "always be my baby" , the exercise teaches us: danlwd wy py an mhsa an jy
Why would anyone write "danlwd wy py an mhsa an jy"? Possible real-world scenarios: Until someone decodes it with a confirmed key,