A Detailed Mathematical Model

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Section II E: Learning Differences


Learning differences are an optional rule which players may take advantage of to gain higher skills. Calculating every possible attribute is not necessary; players may simply use what they choose to look for and find in order to gain higher effective skills.

Below are lds for skills, in dictionary order. Unlisted pairs of skills have no ld except as possibly calculable through chains.

The format is skill, skill, ld.

Acquisition, Persuasion, 15
Acrobatics/Tumbling, Balance, 10
Acrobatics/Tumbling, Climbing, 25
Acrobatics/Tumbling, Dancing, 10
Acrobatics/Tumbling, Dodge, 10
Acrobatics/Tumbling, Fencing, 10
Acrobatics/Tumbling, Jumping, 10
Acrobatics/Tumbling, Move Silently, 25
Acrobatics/Tumbling, Pole Vault, 10
Acrobatics/Tumbling, Riding, 15
Acrobatics/Tumbling, Swimming, 15
Acrobatics/Tumbling, Tightrope Walking, 10
Acrobatics/Tumbling, Wrestling, 10
Acting, Public Speaking, 10
Acting, Storytelling, 5
Anatomy, Massage, 15
Anatomy, Medicine, 10
Animal Handling, Animal Training, 15
Animal Lore, Wood Lore, 10
Anthropology, Cultures, 10
Attack, Attack (other weapon which is also hand-to-hand/also missle), 10
Attack, Balance, 10
Attack, Dancing, 10
Attack, Hunting, 15
Attack, Riding, 15
Attack, Tightrope Walking, 10
Attack, Wrestling 10
Balance, Charioteering, 10
Balance, Climbing, 15
Balance, Dancing, 15
Balance, Pole Vault, 15
Balance, Riding, 10
Balance, Tightrope Walking, 5
Balance, Wrestling, 15
Biology, Herbalism, 15
Biology, Medicine, 10
Blind Action, Hear Noises, 10
Bowyer/Fletcher, Carving, 15
Bowyer/Fletcher, Carpentry, 15
Building, Carpentry, 10
Building, Masonry, 10
Carving, Carpentry, 15
Catch, Juggling, 25
Ceremonies, Heraldry, 15
Chemistry, Herbalism, 10
Chemistry, Pyrotechnics, 10
Climbing, Dancing, 15
Clockwork Device Craftsmanship, Engineering, 10
Cultures, Languages, 35
Dancing, Dodge, 10
Dancing, Fencing, 10
Dodge, Wrestling 10
Engineering, Mathematics, 10
Etiquette, Heraldry, 15
Fencing, Balance, 10
Fencing, Riding, 15
Fencing, Tightrope Walking, 10
Fencing, Wrestling, 10
Fisher, Hunting, 25
Gambling, Guess Actions 10
Gambling, Strategy Games, 15
Gem Cutting, Jewelry Making, 15
Guess Actions, Haggling, 15
Guess Actions, Read Emotion, 5
Herbalism, Incense Making, 10
Herbalism, Medicine, 10
Hide, Hunting, 15
History, Literature, 15
History, Trivia, 10
Hunting, Move Silently, 15
Hunting, Tracking, 10
Hunting, Wilderness Survival, 15
Improvisation, Musical Composition, 10
Juggling, Throw, 25
Jury-Rigging, Repair, 15
Keen Eyesight, Search, 10
Map Making, Navigation, 15
Massage, Medicine, 15
Philosophy, Theology, 10
Public Speaking, Storytelling, 10
Search, Tracking, 10
Strategy Games, Tactics, 10
Tailoring, Weaving, 15


Section II F: Skill Levels and Sample Difficulties


An unadjusted skill is as follows:

Untrained: 0
Just beginning: 10
Dabbler: 20
Moderately skilled: 30
Proficient: 40
Expert: 50
Virtuoso: 60
Exceptional: 70
World Class: 80
Greatest Alive: 90
Greatest of All Time: 100

The following are examples of actions of specific difficulties for archery, hiding, languages, rope walking, and wilderness survival. They are intended to serve as a guide to setting general difficulties for actions. Common sense should be used to apply to other skills; throwing, for example, will not have anywhere near the range and accuracy of archery.

Very easy: -40
Archery: shooting a barrel 20 feet away.
Hiding: hiding in a darkened storeroom full of miscellaneous garbage, while clad in black.
Languages: "Hello." Greetings, numbers, etc. Extremely thick accent.
Rope walking: walking across a plank a foot wide.
Wilderness survival: surviving in a Yedidia orchard.

Easy: -20
Archery: shooting a barrel 20 yards away.
Hiding: hiding in a darkened forest, while clad in black/brown/green.
Languages: "Where is the bathroom?" Basic phrases (phrase book style). Accent that can be moderately easily understood by someone used to dealing with foreigners.
Rope walking: walking across a plank half a foot wide.
Wilderness survival: surviving in a Yedidia forest, where fruitful trees and water are reasonably easy to come by, but there are no hostile inhabitants.

Moderate: 0
Archery: shooting an unsuspecting boar 20 yards away.
Hiding: hiding in a forest in normal daylight, while clad in black/brown/green.
Languages: "I don't want this one. I want that one." Short sentences using very simple vocabulary. Normal accent which does not hinder comprehension.
Rope walking: walking across a plank three inches wide.
Wilderness survival: surviving in a Jec forest, where there is nothing hostile, but food and water are not so easy to come by, and the forest may get cold at night.

Difficult: 40
Archery: shooting a running boar 20 feet away.
Hiding: hiding in a forest at dusk, while clad in clothing that does not blend in.
Languages: "I'm glad to hear that you're feeling better. Do you have any idea how the snake got into your house?" Slightly slowed normal sentences using words that would be in the vocabulary of a child. Accent which only shows itself occasionally, or is generally present but faint.
Rope Walking: walking across a tight rope.
Wilderness survival: surviving on the border of the Tuz forest, where the creatures are potentially hostile.

Very Difficult: 80
Archery: shooting a running boar 20 yards away.
Hiding: hiding in a forest in full daylight, while clad in clothing that does not blend in.
Languages: Free, accentless conversation as a native speaker would, using an adult's vocabulary.
Rope walking: walking across a slack rope.
Wilderness survival: surviving in the heart of the Tuz forest, where creatures tend to be hostile and tough.

Extremely Difficult: 120
Archery: shooting a flying bird 20 yards away.
Hiding: hiding in a low cut field or a bare room, fully lit, wearing clothing that does not blend in. Concealing yourself where there aren't any obvious hiding places.
Languages: Technical discussions using complex sentence structure, unusual grammatical features, and vocabulary that most adults wouldn't know. Conversing with some Urvanovestilli philosophers.
Rope walking: sprinting across a tight rope.
Wilderness survival: Surviving in the Ice Peaks in the middle of winter, where the temperature is frigid and wild animals and other food is almost impossible to find.


Section II G: Experience Gains


The basic unit of adventure is the quest. Upon completion of a quest, each character will receive 2 experience points, adjusted as follows (minimum of 0) for role playing, skill use/adventuring competence/party helpfulness, and moral virtue:

Exceptionally poor: -2 Poor: -1 Normal: 0 Good: +1 Exceptionally good: +2

A bonus of 1 point is awarded for an action that solves a substantial part of the quest.

So a character who had role played well, used his skills clumsily, and had shown exceptional heroism and virtue would receive 2 + 1 - 1 + 2 = 4 ep for the quest.

(No animal may gain experience.)

Experience may be devoted to some small subfield of a specific skill: specialization. Learning a specialization costs half as much (has half the ldf (learning difficulty factor)) as/of learning the whole skill. Learning the rest of a skill, up to an area less than or equal to the level of specialization, costs half as much as learning from scratch. There are also generalizations of skill (for example, languages as a generalization of a specific language, or musical instruments as a generalization of a specific instrument), which have twice the ldf of the specific skill. A generalization of a skill already learned would cost half as much as learning the generalization from scratch, IE exactly as much as the skill cost. (This applies, of course, only to as many ep as were placed in the specific skill beforehand). A generalization must be a specific and closely related group of skills; a "combat skills" generalization which included anatomy, archery, dodge, horseback riding, and longsword would be inappropriate.

Experience points may be used to increase skills as follows: a current skill's base skill's exponent is looked up (see section II I). To raise a skill to a new level: look up the exponent of the desired new base skill. The experience point cost is the difference. For example, let's say that a character has a current skill bs of 34 and 2 ep. The exponent of 34 is 11. He adds the 2 experience points, bringing the exponent to 13. The log of 13 is 37, so he has a new skill bs of 37. (It would have cost him 1 point to make the same increase for a specialization, or 4 points to do so for a generalization.)

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