An independent person
Eccentric, Baffling, strange
self sufficuent
hard-working
"Alone" and "together" are opposites in meaning, so "working alone" could not be a form of "togetherness". Togetherness would require at least two people.
A person who learns about the world by observing it.
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Johann Kepler.
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I would describe such a scientist as an environmental scientist.
if a chef works alone, it would be working in a house. But if a chef is working with other people, then that is in either a restaurant, a chocolate company, or a store.
You are working alone & your shift is over at 6:00. The person scheduled to begin working at the 6:00 shift doesn't show. What would you do?