Worked edge or natural chipping?

[Salina]

This edge looks worked but I’m new at this- thoughts?

 

[CreekSide]

Looks like a reduction flake. Keep looking in that area

 

[Older The Better]

Something definitely happened on that edge, it depends on where it was found, could be intentional, could be creek chatter, could be crushing against other rock or trampling.

 

[Rockdog]

Looks like a flake that was knapped for a quick job.

 

[unclemac]

yes, an expedient tool, used once and tossed aside.