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Where a piece of dynamic content was rendered (such as a\n+new array, or new component) the old DOM and possibly-invalid child views\n+were discarded and new DOM and views created from scratch. Additionally,\n+granular observation was computationally expensive to initialize and maintain\n+for a large set of values.\n+\n+Glimmer replaces this approach with a value-diffing strategy.\n+During render, each occurrence of dynamic content (for example a component,\n+and each helper, or a data binding) generates a value representing its\n+render state. Upon rerender, this tree of values is walked. Clean nodes are\n+presumed to already be correctly rendered, dirtied nodes have their value\n+recomputed and children values (which may or may not have dirtied) walked.\n+\n+The result is a stunning improvement in many rerender cases.\n+\n+A port of the \"dbmonster\" demo to Ember.js performs XX% better with 1.13 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