Sunday, 29 August 2021

Education, Jazz, publishing

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Education that broadens the horizons without elevating the perspective at the same time makes the earth appear flat.   When times are uncert...

Understanding Symbolic Logic, Virginia Klenk, 5th ed., Pearson Prentice Hall, 2008, Unit 18, Ex. 2e, p. 354

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Prove the logical truth.     1.       ( ∃y)[Fy  • (x)(Gx  ⊃  Hxy)] 2.       Gx 3.       Fm  • (x)(Gx  ⊃  Hxm)] 4.       (x)(Gx ⊃ Hxm)] • Fm ...
Sunday, 22 August 2021

Shopping trolley, earning and cooking, peacemaker and dealmaker

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The deception inherent in online shopping is that the shopping trolley is never pictured in scale. One school says that in order to eat you ...

Understanding Symbolic Logic, Virginia Klenk, 5th ed., Pearson Prentice Hall, 2008, Unit 18, Ex. 2b, p. 354

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 Prove the logical truth.   1.       ( ∃ x)(y)(z)Fxyz 2.       (y)(z)Fmyz 3.       (z)Fmyz 4.       Fmyz 5.       ( ∃ x)Fmyz 6.       (y) ( ...
Sunday, 15 August 2021

Dog owners, money, business English

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Next time a dog owner says their dog won’t bite, ask them why? It’s not about the money, it’s about the principle, the principle being: ever...
Sunday, 8 August 2021

Success, toilet paper, knowledge

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If you find success in your earthly affairs too overwhelming, there are always other-worldly affairs to seek refuge in. I remember reading a...

Understanding Symbolic Logic, Virginia Klenk, 5th ed., Pearson Prentice Hall, 2008, Unit 18, Ex. 2a, p. 354

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 Prove the theorem.   1.       (x)(y)Fxy 2.       (y)Fmy 3.       Fmr 4.       ( ∃y)Fmy 5.       ( ∃x)(∃y)Fxy 6.       (x)(y)Fxy  ⊃  ( ∃ x)(...