The phrase "as predictably as a" is correct and usable in written English.
It can be used to compare the predictability of one event or action to another, often in a metaphorical sense.
Example: "He arrived late to the meeting, as predictably as a train running behind schedule."
Alternatives: "as reliably as a" or "as consistently as a".
Don's denouement, which will come as predictably as a tequila sunrise follows a golden dawn, will surely be as heartbreaking as it will be wrapped in style, humour and bathos.
Service employees can't be managed as predictably as a factory, he says, and pushing further into the enterprise will bring up uncomfortable conflicts.
Did any other 20th-century leader have such a large and lasting influence on world history?" The answers emerge from this comprehensive, minutely documented book, but not as predictably as Ezra F. Vogel, a Harvard University emeritus professor of social sciences, assumes.
Researchers exploring the relationship between diabetes and fitness found that a person's level of strength did not match up with diabetes risk as predictably as they had expected, but the way a test measures strength may make a difference in the results.
As predictably as the heroine's death in an opera, the biggest claim in cosmology in years has finally officially unraveled.
A scene about the U. S. Treasury secretary, Timothy Geithner, from Michael Moore's documentary, "Capitalism: A Love Story". Playing his customary role as predictably as Chaplin, Michael Moore keeps up the assault.
That physical change releases heat as predictably as the rapid sundering of chemical bonds that reduces a piece of burning wood to a pile of ash.
Over the years certain topics tend to cycle through the discussion threads as predictably as Madame Defarge wisecracks (Can I carry knitting needles onto a plane? Is it disrespectful to knit in church? Where can I find that pattern/yarn/gadget?), but if you have a question, no matter how arcane, there is almost always someone willing to answer it.
As predictably as clockwork, the pundit class is telling President Obama that to create a presidential "legacy" he needs to find bipartisan agreement with the Republican Congress on issues like free trade and cutting the corporate tax rate to "prove" Washington can govern.
Mention romantic fiction and, within a sentence, the chiffon-clad ghost of Barbara Cartland appears as predictably as the handsome heroes or damsels in distress who haunt her books.
"One of the biggest challenges for us is understanding that people don't behave as predictably as software does, so we're focused on making sure our operators have a really structured system that couples with our technology.
