<https://www.ascensiongamedev.com/topic/3471-possibility-of-multiple-skills/#comment-34951>
<http://schema.org/text>
"You can launch even with ressource just inscrease the skill variable to give xp when the player cut a ressource.\n "
<https://www.ascensiongamedev.com/topic/3471-possibility-of-multiple-skills/>