COME PHRASAL VERBS

2. Entrepreneurs often come up with ideas to make our lives a little more convenient.

6. Parrelet was so respected that when other watchmakers came up against a problem, they would consult him.

5. Early experiments with flying didn't really come off.

3. Over time, we come to rely on them.

4. A researcher came across the material for post-it notes when looking for a new kind of glue.

1. But how do such inventions come about?