Dr. Stone's Senku is a brilliant scientist, but he is not infallible or psychic.

Source: https://gamerant.com/dr-stone-senku-outsmarted-anime-manga/

He may end up using it on the villainous Why-Man if they meet, and since the stone can heal, Senku might even use it to heal the still-injured, cryogenically frozen Tsukasa Shishio.

Source: https://www.cbr.com/dr-stone-theory-petrification-intentional-weapon/

In the events of Episode 16, when Senku and the Kingdom of Science go head-on with the Petrification Kingdom, tactical combat squares off against brute force and a disadvantage in the numbers game.

Source: https://gamerant.com/dr-stone-new-world-joker-and-the-thief/

Senku will dig deeper into the cause of the petrification in Dr. Stone: New World.

Source: https://www.cnet.com/tech/services-and-software/absolute-best-anime-you-should-stream-april-2023/

With the petrification tool in their possession, Senku and the Kingdom of Science have executed their plan and controlled the situation.

Source: https://gamerant.com/dr-stone-new-world-joker-and-the-thief/