Sandhya Ramesh is the Senior Editor of Science at ThePrint India. She writes text stories and creates videos about science and research, with a focus on space and earth sciences, public health and mental health, the ongoing climate crisis, paleosciences and evolution, and more. She can be reached at sandhya.ramesh@theprint.in Find her on Twitter at
@sandygrains 
Even with this advanced technique, one would know at best the age of the rock used for a stone age tool, not the time when the tool was chiseled to its shape & used. The two events could be widely apart in timeline.
Am I missing something?