One possible reason that aura of suspicion may have changed, TIME suggested, was a lot less complicated than anything having to do with evil spirits. It was just a matter of simple economics.
Previously it was thought that “true”-handedness, meaning predictably using one hand over the other, was a feature unique to primates. The new research, published in the journal Current Biology, not only negates that but also goes one step further: kangaroos are even more true-handed than we are.
"Mr Cole points out that the theory that feeding habits caused “handedness” in animals and men breaks down with cats, which do not use their paws to convey food to their mouths. Nor does it explain why some subjects prefer one limb, some another, while others are ambidextrous."
I've just been given a right handed kettle (leftys will understand) and i still havent decided if i should use my left or right hand to pick it up. The hand i use changes daily and my bf thinks its funny.