What does a double fate line mean?

What this means

First confirm that both marks are vertical fate-line tracks toward the middle finger, not a crossing crease, influence line, shadow or photo artifact.

If the two lines run parallel, palmistry often reads them as dual career structure, support from others or more than one source of responsibility.

Compare which line is deeper, where each starts, the head line, sun line, life line and both hands before drawing a strong conclusion.