Is it safe to carry a baby in a sling or backpack while riding a bicycle?

Is it safe to carry a baby in a sling or backpack while riding a bicycle?

Riding a bike with one seat means one passenger. To ride a bicycle with a baby in a sling or a backpack is incredibly dangerous and should never be done under any circumstances. Often, in many states riding with a baby in a sling or backpack is against the law. I don't even think some states make it a law because they think any common sense would prevail and a parent would never put their child in a backpack or a sling and ride a bicycle with that child.