Having read Kafka as a teenager I was aware of doppelgängers, but largely constrained their existence to literary device. Until I met my own! It was at a knitting group, so we're already off to a good start. This young woman has a similar build, haircut, mannerisms and carriage, and similar name. It was a bit unnerving but also amusing.
Do you have a doppelgänger, or know someone who does? Do you believe in them? Should one befriend one's other self or turn and walk away?