State the Obvious

[Animekitty47]

Murdering someone is illegal.  

[PizzaBoy220]

Murdering usually requires something sharp.  

[bare hands]

Teeth can be sharp.  

[Animekitty47]

Knives are sharp.  

[Jijinan]

Knives cut things.

 

[PizzaBoy220]

People sometimes cut themselves.  

[Jijinan]

There are a lot of people on Earth.  

[Cat_the_Demon]

Earth is a planet  

[Mistress de FrankNFurter]

there is water on Earth  

[Cat_the_Demon]

Water can make things wet  

[Animekitty47]

Water is blue.  

[Cat_the_Demon]

The sky is blue too  

[PizzaBoy220]

The sky is blue in the day.  

[Animekitty47]

You can see the stars at night.  

[PizzaBoy220]

You can also see the moon at night.