Rules Of Thumb Flashcards

1
Q

What’s useful to know about the U.S. quarter?

A

It’s just under an inch in width.

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2
Q

What’s a potential way to determine if something you can see is not real?

A

Cross your eyes—if the thing doesn’t double, it’s not real.

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3
Q

How can you tell a puppy is calm?

A

Its tail wags in time with its walk.

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4
Q

How long does a 20-lb tank of propane keep a hot-air balloon airborne?

A

Half an hour.

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5
Q

What positioning info is useful for hanging artwork?

A

Hang it so the center is at least 60 inches above the floor but never more than 10 inches above the furniture below it.

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6
Q

What’s a useful way to evaluate a play’s stage?

A

Squint; if any prop or color stands out, tone it down.

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7
Q

What building-to-street ratio is most visually appealing?

A

Height of buildings : width of street

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8
Q

How should you price your knitted handiwork?

A

Three times the cost of materials.

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9
Q

What’s one way to distinguish a real pearl from a fake?

A

Rub it against your teeth; a real pearl will grate.

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10
Q

What’s a general ratio of time spent in hospital to time recovering?

A

1 day : 1 week

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11
Q

How far can you travel per day on a highway bicycle at a leisurely pace?

A

50 miles

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12
Q

If a road has a reflective center line that was a cost-effective improvement, what may be true of that road?

A

It carries 400+ cars per day.

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13
Q

What is the general ratio of cartridges of caulk to windows/doors?

A

1:2

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14
Q

How long can one live without blood/air/water/food?

A

3 seconds/minutes/days/weeks

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15
Q

What’s a good metric for a maximum car payment?

A

No more than 10 percent of your monthly income.

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16
Q

What’s the likely difference between surnames starting with Mc and Mac?

A

Mc is more likely Irish, Mac is more likely Scottish.

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17
Q

What’s one way to tell a lobster was dead before it was boiled?

A

Its tail isn’t curled. D:

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18
Q

What’s a good way to quiet down a drunk person?

A

Whisper to them.

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19
Q

What’s the approximate ratio of front-line soldier to support personnel?

A

1:10

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20
Q

What’s a rough purchasing criterion for a piece of equipment for a business?

A

It should pay for itself in three months.

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21
Q

What can you say about the temperature when you can see your breath?

A

It’s 45 degrees or below

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22
Q

How can you determine the readable distance (in feet) of words on a billboard?

A

100 x half the height of the letters in inches (or 50 times height of letter??)
(?? Check this??)

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23
Q

How many hours of conversation to know whether you really like someone?

A

30

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24
Q

What is the weight of your skin?

The surface area of your body?

A

About 1/16 your body weight.

Surface area of palm * 100.

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25
Q

What are the proportions of the uses of a single butchered cow?

A
1/4:
Steaks
Ground beef/stew meat
Roasts
Waste
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26
Q

Roughly how long should you cook fish?

A

Ten minutes per inch of thickness.

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27
Q

What’s a rough serving amount for children?

A

One tablespoon per year of age

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28
Q

How much wine can be made from a ton of grapes?

A

170 gallons

29
Q

How many albums to not tire of your music?

A

200, of varying genres

30
Q

Ratio of fluorescent light to indoor growing area?

A

20 watts per square foot

31
Q

What is the ratio of meteorite to its crater diameter?

A

1:20

32
Q

What’s a moderately skilled Scrabble player score per word?

A

20

33
Q

Define conservative

A

A statesman who is enamored of existing evils, as distinguished from the Liberal, who wishes to replace them with others.

34
Q

What’s a good rule for eating?

A

Eat only if a 1 or 2 on a hunger scale of 1-10. Stop at 5.

35
Q

How deep should you plant a flower bulb?

A

Three times its length.

36
Q

How can you estimate a train’s speed in mph?

A

Number of clicks / 29 seconds.

37
Q

Which should come first: characters or plot?

A

Characters

38
Q

What’re two rules of thumb about flower arranging?

A

Put one third as many flowers as you think you need, then take half of them out.
It should be 1.5x height or width of the container.

39
Q

How much life insurance should a person have?

A

If young kids, 5-6 times salary. If not, enough to pay off debt.

40
Q

What’s a rough metric for bricklaying?

A

Six bricklayers plus foreman can lay 1,000 square feet/day

41
Q

What’s a rough metric for saving for home repair (assuming ownership)?

A

$100/month

42
Q

Which two browsers should your site work in, minimally?

A

IE and Firefox

43
Q

What’s a good rule of thumb for moving?

A

Set up the bed first so you have a place to pass out

44
Q

How can you tell if you blinked in a flash photo?

A

Close your eyes: if you blinked, the slot will be red

45
Q

Rule of thumb for size of herb garden?

A

Two square feet per variety

46
Q

What’s a general rule for determining the max speed of a boat?

A

Multiply Square root of boat length in feet by 1.3

47
Q

How much food per person for long trips?

A

Two pounds

48
Q

How can you estimate the number of cost of groceries?

A

$3 per item

49
Q

How many labels can an (average/ambitious) person affix to envelopes, per hour?

A

400/800

50
Q

How firm should a medium-rare steak be?

A

The puffy area between thumb and index

51
Q

How long would it take four experienced workers to build an average-sized house?

A

~400 hrs

52
Q

What’s a rule of thumb for the ratio of words in a speech to time it’ll take to deliver?

A

150 words : 1 minute

53
Q

What’s a rule of thumb for an exercise machine weight setting?

A

Choose weight that you can do 8-12 reps. with no fatigue means too light

54
Q

What’s a rule of thumb for making a stew?

A

Use equal amounts of ingredients and double that amount of starch (rice, potatoes, etc)

55
Q

What’s the rough relationship between cricket chirps and temperature in Fahrenheit.

A

(Number of times a cricket chirps in 15 seconds) + 37

56
Q

What’s a rule of thumb for clothes shopping?

A

Scan racks from a distance. If nothing stands out, move on.

57
Q

What’s an obvious difference between fish and sea mammals?

A

Vertical vs. horizontal tails

58
Q

What’s a rough ratio of pounds of regular-grind coffee to cups of coffee in a commercial urn?

A

1:50-60

59
Q

How can you get an accurate estimate of the size of a crowd?

A

(Max reported by supporters + min reported by detractors) / 3

60
Q

What’s a good ratio of flag to flagpole?

A

Width (hoist) of flag = 1/5 of flagpole height

61
Q

In composition, what are the associations with the direction the subject is looking / composition is flowing?

A

Left is past, right is future, up is positive, down is negative

62
Q

How much is the thumb worth?

A

40% of the entire hand, in worker’s compensation cases

63
Q

Which way do the tips of tall, pointed trees typically lean?

A

Slightly north of east

64
Q

How can you predict a child’s adult height?

A

Double their height on their second birthday

65
Q

How many sheets of paper can you mail with one first-class stamp?

A

Five

66
Q

What’s one way to tell the length of an alligator?

A

Distance between eyes in inches = length in feet

67
Q

What’s a kitten-adoption tip?

A

Get two; they’ll entertain each other

68
Q

What’s a rule of thumb for tipping a maid?

A

$1/night, more at expensive hotel or for extra service. Lots more if you made a mess

69
Q

What’s a fast way to find a small object on the floor?

A

Roll a flashlight on the floor and look for the object’s shadow