the real value of something can only be judged when it's put to use
настоящая ценность чего-либо видна только при использовании (nastoyashchaya tsennost chevo-libo vidna tolko pri ispolzovanii)
"He claims the app is great, but the proof is in the pudding."
"Он утверждает, что приложение отличное, но всё покажет практика." (on utverzhdayet chto prilozhenie otlichnoe no vsyo pokazhet praktika)
to say something embarrassing or inappropriate by mistake
A silly or foolish person.
to manage an organization or group efficiently and strictly
The simplest version of a product used to test an idea.
Important things take time to accomplish.
a situation where time seems to stop or move differently
