This is a rather long link, so it may not work, but I took the bait to see how I'd fair in the realm of older kitchen gadgets. Some of them made sense; some just made me laugh - oh to live in the Victorian era. By the way I scored a 10/20.
Cooking with a dull knife is not only a challenge, it can be dangerous. Dull knives are likely to slip while slicing vegetables and can easily cut you. Here’s a quick and easy way to straighten out that blade.