Relying solely on security-by-obscurity can give a false sense of protection and should not replace robust defenses.

Relying solely on security by obscurity is risky because once the hidden details are discovered, the whole system can be compromised.

Many companies now prioritize security-by-design to prevent vulnerabilities from being built into their products.

Every morning, he fed the sparrows by crums left on the windowsill.

He missed the deadline because paralysis by analysis kept him from making a decision.

When traveling in a new country, one sets one's watch by someone familiar with the local time to avoid missing appointments.

In our town, people kept setting one's watch by someone who always arrived on time, making the schoolteacher the village's unofficial clock.

The antique dealer was selling by the candle, watching the flame nervously as bidders circled.

At the night market, the vendor sells by the candle, offering one candle for each small payment.

When supplies dwindled, the shop sold by the candle to make them last longer.