The phrase "a straightforward and predictable" is correct and usable in written English.
It can be used to describe something that is easy to understand and has expected outcomes or behaviors.
Example: "The process was designed to be a straightforward and predictable way to achieve the desired results."
Alternatives: "clear and expected" or "simple and reliable".
Evidence reveals, however, that our planet is an almost unimaginably complicated beast, which reacts to a dramatically changing climate in all manner of different ways; a few – like the aforementioned – straightforward and predictable; some surprising and others downright implausible.
Her book serves as a straightforward and necessary primer on the predictable ways—historically speaking that AI and big data tend to let us down… Broussard lays out clearly and firmly just how duped we've been by the unique brand of technological boosterism that develops when technologists, and even whole fields of technology, have little to no social accountability.
Because of their straightforward and predictable format, the A&E biographies work best when good film is available (not likely with, say, the forthcoming presentation on Peter the Great).
But that is only if the race is straightforward and predictable - and how many times has that happened this year?
It was a straightforward and uncontroversial idea.
"The Boost Mobile Monthly Unlimited plan offers consumers straightforward pricing and predictable payments on a true nationwide network with no restrictions of a local calling area".
Fracking took 25 years to develop and fine-tune, a product of a number of programs and collaborations a reminder that energy technology rarely develops in a straightforward, predictable fashion.
An objective rule that resolves a legal issue in a straightforward, predictable manner.
This study showed that bacterial activity was not a straightforward predictable parameter in the water phase as e.g. nitrate-N would be in identical RAS, and showed unexpected sudden changes/fluctuations within specific RAS.
