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BP9 Non-wiggly outline vs. wiggly outline.
(edit; present; nest [left/right]; search; history)
COMMENTS

"Wiggly" means a high number of small concavities adjacent to one another all around the outline.

All examples in this Bongard Problem are shape outlines.

Shapes with outlines that are only wiggly within partial sections would be ambiguous. Shapes with outlines that have many medium-size concavities would be ambiguous.

REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 216.

CROSSREFS

Adjacent-numbered pages:
BP4 BP5 BP6 BP7 BP8  *  BP10 BP11 BP12 BP13 BP14

KEYWORD

easy, nice, fuzzy, stable, world, finished, traditional, bongard

CONCEPT curve_texture (info | search),
texture (info | search)

WORLD

Multiple options:
mediumsize_centered_outline [smaller | same | bigger],
shape_outline [smaller | same | bigger]

AUTHOR

Mikhail M. Bongard

BP63 Shading thicker on the right side vs. shading thicker on the left side.
(edit; present; nest [left/right]; search; history)
REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 234.

CROSSREFS

Adjacent-numbered pages:
BP58 BP59 BP60 BP61 BP62  *  BP64 BP65 BP66 BP67 BP68

KEYWORD

dual, handed, finished, traditional, viceversa, bongard

CONCEPT left_right (info | search),
curve_texture (info | search),
texture (info | search)

AUTHOR

Mikhail M. Bongard

BP107 Three simple lines vs. three complex lines.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP102 BP103 BP104 BP105 BP106  *  BP108 BP109 BP110 BP111 BP112

KEYWORD

number, traditional

CONCEPT number (info | search),
curve_texture (info | search),
texture (info | search)

AUTHOR

Douglas R. Hofstadter

BP184 Curve is smooth close to the middle vs. curve zigzags close to the middle.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP179 BP180 BP181 BP182 BP183  *  BP185 BP186 BP187 BP188 BP189

KEYWORD

traditional

CONCEPT imagined_point (info | search),
imagined_entity (info | search),
curve_texture (info | search),
texture (info | search)

WORLD

curve [smaller | same | bigger]

AUTHOR

Harry E. Foundalis

BP185 Curve with two complex parts vs. curve with three complex parts.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP180 BP181 BP182 BP183 BP184  *  BP186 BP187 BP188 BP189 BP190

KEYWORD

traditional

CONCEPT number (info | search),
curve_texture (info | search),
texture (info | search)

WORLD

curve [smaller | same | bigger]

AUTHOR

Harry E. Foundalis

BP212 No dot is too far apart from another dot vs. at least one dot is far apart from all other dots.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP207 BP208 BP209 BP210 BP211  *  BP213 BP214 BP215 BP216 BP217

KEYWORD

traditional

CONCEPT collinear (info | search),
near_far (info | search),
curve_texture (info | search),
texture (info | search)

AUTHOR

Giuseppe Insana

BP216 Ink tip (non-homogeneous line) vs. Marker tip (homogeneous line).
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP211 BP212 BP213 BP214 BP215  *  BP217 BP218 BP219 BP220 BP221

KEYWORD

perfect

CONCEPT line_or_curve_endpoint (info | search),
curve_texture (info | search),
texture (info | search)

AUTHOR

Giuseppe Insana

BP217 Totally black lines vs. lines with white specks.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP212 BP213 BP214 BP215 BP216  *  BP218 BP219 BP220 BP221 BP222

KEYWORD

perfect, pixelperfect

CONCEPT curve_texture (info | search),
texture (info | search)

AUTHOR

Giuseppe Insana

BP221 No small square at the end of any curve vs. curve ends at a small square.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP216 BP217 BP218 BP219 BP220  *  BP222 BP223 BP224 BP225 BP226

KEYWORD

less, traditional

CONCEPT existence (info | search),
curve_texture (info | search),
texture (info | search)

AUTHOR

Giuseppe Insana

BP248 Dashed lines inside solid shape make an identical but slightly smaller shape, parallel to the one outside vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP243 BP244 BP245 BP246 BP247  *  BP249 BP250 BP251 BP252 BP253

KEYWORD

traditional

CONCEPT inside (info | search),
size (info | search),
similar_shape (info | search),
similar (info | search),
curve_texture (info | search),
texture (info | search),
parallel (info | search)

AUTHOR

Andreas Gunnarsson

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