Lossy compressors don't have the same constraints as a lossless compressor. If you data your input, compress it, and then decompress it, the output is not identical to the input. This allows the compressor to potentially compress the data far more than even the ideal lossless compressor hypothesized above.
The question mark (?), also known as the interrogation point, query, and eroteme, is a punctuation mark that indicates an interrogative clause, or phrase in many languages. The question mark is not used for indirect questions.
Quick Answer. One common texting symbol is :-/ which is intended to represent skepticism on the part of the sender. This follows the typical texting practice of using keyboard symbols to make a face representing the current mood or emotion of the person sending. Continue Reading.