Does Modern Science Owe Its Existence to Religion?

[Statler Waldorf]

P1. All dogs fly
P2. Daisy is a Dog
C. Therefore, Daisy flies

Is a valid argument, it is not a sound one though.

How is this a valid argument? It starts with a faulty premise.

An argument's validity has nothing to do with whether the premises are true or not but only whether the conclusion logically follows the premises. Now a sound argument is both valid and the premises are true. The dog argument above is not a sound argument but it is a valid one because if all dogs could fly, and Daisy is a dog then logically we could conclude that Daisy could also fly.

This will help...

http://philosophy.hku.hk/think/arg/valid1.php

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Arguments can be valid without being sound. Right Statler?

Correct, but arguments cannot be sound without first being valid.