The term "Loosey Goosey" vaguely means something is incomplete, or less than rigorous. You might say a benefit of weakly-typed languages is that they allow a more Loosey Goosey approach to problem solving. Then again, you might say a disadvantage of weakly-typed languages is that they allow a more Loosey Goosey approach to problemsolving.
See also: Wabi Sabi.
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