> actively damage your rankings after a minor Google update on a rainy Thursday afternoon If I were Google, I'd be making these changes all the time specifical

> actively damage your rankings after a minor Google update on a rainy Thursday afternoon If I were Google, I'd be making these changes all the time specifically to trash the profitability of SEO which damages the usefulness of results. By randomising out the effectiveness of any SEO method, the central limit would just be the actual content. Assuming they are actually aiming for useful results, and not, say, profitable results (like, say, blogspam and mirror websites that have more ads than the originals).