There's a "simple memoization" version of fibonacci that takes more space than `fibsViaUnfold`. I think the term "simple memoization" (and equivalents used in t

There's a "simple memoization" version of fibonacci that takes more space than `fibsViaUnfold`. I think the term "simple memoization" (and equivalents used in these comments) are a bit too imprecise to be useful.