Baldur's Gate 3 has players spoiled for choice and ensures that said choices genuinely matter. Of the many decisions players must make, the most vital is their proficiency of Skills — particular talents that determine how good one's character is at something. Every Skill is attached to specific Abilities that determine its bonus, but choosing to be proficient in a Skill means that players are more likely to succeed on checks using it and benefit from additional opportunities regarding it. So, the Skill proficiencies players decide on make a big difference.