A detailed examination of current data on S _ { 17 } ( as opposed to an examination of S _ { 17 } ( 0 ) only ) excludes quoting S _ { 17 } ( 0 ) with sufficiently small uncertainty .
In contrast to suggestions that S _ { 17 } ( 0 ) is now known with the accuracy of \pm 3 % , the exact value of S _ { 17 } ( 0 ) is dependent on the choice of the data and the choice of theory used for extrapolation .
In addition recent high precision results ( including the Seattle data ) on S _ { 17 } which are in good agreement , still differ on the measured slopes , as do theoretical models that predict different d-wave contribution , precluding an accurate extrapolation to zero energy of the consistent data .
Using a common extrapolation of only the consistent high precision data , suggests a value of S _ { 17 } ( 0 ) = 21.2 \pm 0.5 eV-b , but a value equal to or smaller than 19.0 eV-b can not be excluded due to the uncertainty in the extrapolation , leading to an additional error of ^ { +0.0 } _ { -3.0 } eV-b .
This ( unacceptable ) situation must be cleared by future experiments .
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