Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fact and Fancy in Neutrino Physics II   This brief and opinionated essay evolved from my closing talk at the Tenth
International Workshop on Neutrino Telescopes, held in Venice in March 2003.
Portions were inspired by several excellent presentations at the Workshop.
Other scattered comments about neutrino physics relate to variations of the
seesaw model yielding the FGY ansatz, or to those yielding significant
suppressive mixing of neutrino amplitudes.

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The categories of this paper are: mtrl-th
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The categories of this paper are: stat
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The categories of this paper are: patt-sol
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The categories of this paper are: chem-ph
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The categories of this paper are: adap-org
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The categories of this paper are: cmp-lg
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The categories of this paper are: quant-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-ex
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The categories of this paper are: math-ph
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The categories of this paper are: math
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The categories of this paper are: ao-sci
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The categories of this paper are: q-alg
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The categories of this paper are: alg-geom
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The categories of this paper are: cond-mat